A331841 -id:A331841 - cp's OEIS frontend

A062847 When expressed in base 2 and then interpreted in base 6, is a multiple of the original number.

0, 1, 2, 4, 6, 8, 12, 16, 24, 32, 36, 48, 64, 66, 72, 96, 128, 132, 144, 174, 186, 192, 216, 252, 256, 264, 288, 348, 372, 384, 396, 432, 462, 504, 512, 528, 576, 696, 744, 768, 792, 864, 924, 1008, 1024, 1056, 1152, 1296, 1392, 1488, 1512, 1536, 1584, 1728

Offset: 1

Erich Friedman, Jul 21 2001

There are only five odd terms of the sequence that are less than 10^7, namely 1, 12025, 233285, 863395 and 9545429. - Dimiter Skordev, Feb 02 2020

			12 in base 2 is 1100, which interpreted in base 6 is 252=21*12.

Dimiter Skordev, Table of n, a(n) for n = 1..550 (terms less than 10^7)
Dimiter Skordev, Python script

Cf. (with base 2 and b): A062845 (b=3), A062846 (b=4), A331841 (b=5), A062848 (b=7), A062849 (b=8), A062850 (b=9), A032533 (b=10).

[0] cat [k:k in [1..1750]|Seqint(Intseq(Seqint(Intseq(k, 2))), 6) mod k eq 0]; // Marius A. Burtea, Feb 02 2020

isok(n) = (n==0) || ((fromdigits(digits(n, 2), 6) % n) == 0); \\ Michel Marcus, Feb 01 2020

cp's OEIS Frontend

A062847 When expressed in base 2 and then interpreted in base 6, is a multiple of the original number.

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