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Revisions by Stefano Spezia

(See also Stefano Spezia's wiki page)

(Bold, blue-underlined text is an ; faded, red-underlined text is a deletion.)

Showing entries 1-10 | older changes
A001229
Numbers k such that phi(sigma(k)) = k.
(history; published version)
#66 by Stefano Spezia at Sat Oct 26 16:37:51 EDT 2024
STATUS

editing

#65 by Stefano Spezia at Sat Oct 26 16:37:33 EDT 2024
COMMENTS

58408147353600, 105134665236480, 525673326182400, 19177273221120000, 24352371671040000, 24352371671040000, 164396522862673920, 307716568435261440, 581710621040640000, 821982614313369600, 1538582842176307200, 3689242951680000000, 19072410539212800000, 22672353296646144000, 84171019705689047040,106883951255617536000, 133506873774489600000, 157550883038853857280, 238078176130916352000, 378952190815371264000, 396796960218193920000, 420855098528445235200, 787754415194269286400, 1123165474788704256000, 1136856572446113792000, 1458444893222338560000, 2192825306468966400000, 2784571938725068800000, 5950922822988595200000, 9765074196076953600000,10231709152015024128000, 19492003571075481600000, 113344611204464640000000, 166896119116726272000000, 589141359475870924800000,1168272833817083904000000, 1754570085129957408768000, 121719498872843560550400000, 384250848643460672520192000, 852036492109904923852800000, 785325575281078960128000000000, 1176137788588135878775011916382208000, 125084202138325863193830998881075200000, 875589414968281042356816992167526400000 are also in the sequence - Richard R. Forberg, Oct 26 2024

STATUS

proposed

A377363
allocated for Stefano Spezia
(history; published version)
#4 by Stefano Spezia at Sat Oct 26 16:21:16 EDT 2024
STATUS

editing

A330156
Decimal expansion of the continued fraction expansion [1; 1/2, 1/3, 1/4, 1/5, 1/6, ...].
(history; published version)
#37 by Stefano Spezia at Sat Oct 26 16:21:08 EDT 2024
STATUS

editing

A088538
Decimal expansion of 4/Pi.
(history; published version)
#134 by Stefano Spezia at Sat Oct 26 16:21:04 EDT 2024
STATUS

editing

A377363
allocated for Stefano Spezia
(history; published version)
#3 by Stefano Spezia at Sat Oct 26 14:51:40 EDT 2024
FORMULA

Equals 2/zeta(2).

CROSSREFS

Cf. A000583, A000796, A002388, A005408, A013661.

#2 by Stefano Spezia at Sat Oct 26 14:26:52 EDT 2024
NAME

allocated for Stefano Spezia

DATA

OFFSET

REFERENCES

LINKS

FORMULA

EXAMPLE

MATHEMATICA

CROSSREFS

KEYWORD

allocated

AUTHOR

STATUS

approved

#1 by Stefano Spezia at Sat Oct 26 14:26:52 EDT 2024
NAME

KEYWORD

STATUS

A330156
Decimal expansion of the continued fraction expansion [1; 1/2, 1/3, 1/4, 1/5, 1/6, ...].
(history; published version)
#36 by Stefano Spezia at Sat Oct 26 13:55:17 EDT 2024
LINKS

Wikipedia, <a href="https://en.wikipedia.org/wiki/Continued_fraction#Continued_fraction_expansions_of_%CF%80">Continued Fraction Expansions of Pi</a>

#35 by Stefano Spezia at Sat Oct 26 13:54:59 EDT 2024
REFERENCES

LINKS

FORMULA

STATUS

approved

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Last modified October 26 16:29 EDT 2024. Contains 377119 sequences.
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