A293214 - OEIS

A293214

a(n) = Product_{d|n, d<n} A019565(d).

1, 2, 2, 6, 2, 36, 2, 30, 12, 60, 2, 2700, 2, 180, 120, 210, 2, 7560, 2, 6300, 360, 252, 2, 661500, 20, 420, 168, 94500, 2, 23814000, 2, 2310, 504, 132, 600, 43659000, 2, 396, 840, 2425500, 2, 187110000, 2, 207900, 352800, 1980, 2, 560290500, 60, 194040, 264, 485100, 2, 115259760, 840, 254677500, 792, 4620, 2, 264737261250000, 2, 13860

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OFFSET

1,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..1024

Index entries for sequences related to binary expansion of n

FORMULA

a(n) = Product_{d|n, d<n} A019565(d).

a(n) = A300830(n) * A300831(n) * A300832(n). - Antti Karttunen, Mar 16 2018

Other identities.

For n >= 0, a(2^n) = A002110(n).

For n >= 1: