A329762 - OEIS

A329762

a(1) = 1; thereafter a(n+1) > a(n) is the smallest multiple of a(n) using only odd digits but not divisible by 3.

1, 5, 35, 175, 7175, 179375, 17399375, 51797939375, 3315119917939375, 93137793511399131779375, 79375315115111911957537791599375, 55751171777397357155597571713137115337799375

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OFFSET

1,2

COMMENTS

Equivalently, the sequence is defined as a(1) = 1, a(2) = 5, and for n > 1, a(n+1) > a(n) is the smallest multiple of a(n) using only odd digits. All terms besides a(1) are divisible by 5.

LINKS

Table of n, a(n) for n=1..12.

CROSSREFS

Cf. A078221, A078223.

Sequence in context: A048515 A219973 A100739 * A359520 A376496 A043014

Adjacent sequences: A329759 A329760 A329761 * A329763 A329764 A329765

KEYWORD

nonn,base

AUTHOR

Chai Wah Wu, Dec 04 2019

STATUS

approved