This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A309957 #14 Sep 08 2022 08:46:22
%S A309957 0,1,2,3,4,5,0,1,2,3,4,5,0,2,4,6,8,10,0,3,6,9,12,15,0,4,8,12,16,20,0,
%T A309957 5,10,15,20,25,0,0,0,0,0,0,0,1,2,3,4,5,0,2,4,6,8,10,0,3,6,9,12,15,0,4,
%U A309957 8,12,16,20,0,5,10,15,20,25,0,0,0,0,0,0,0,2,4,6,8,10,0,4,8,12,16,20,0,6,12,18,24,30,0,8,16,24,32
%N A309957 Product of digits of (n written in base 6).
%H A309957 Seiichi Manyama, <a href="/A309957/b309957.txt">Table of n, a(n) for n = 0..10000</a>
%F A309957 G.f. A(x) satisfies: A(x) = x * (1 + 2*x + 3*x^2 + 4*x^3 + 5*x^4) * (1 + A(x^6)).
%p A309957 seq(convert(convert(n,base,6),`*`),n=0..100); # _Robert Israel_, Aug 24 2019
%t A309957 Table[Times @@ IntegerDigits[n, 6], {n, 0, 100}]
%o A309957 (Magma) [0] cat [&*Intseq(n,6):n in [1..100]]; // _Marius A. Burtea_, Aug 25 2019
%Y A309957 Cf. A007092, A007954, A053827.
%K A309957 nonn,base
%O A309957 0,3
%A A309957 _Ilya Gutkovskiy_, Aug 24 2019