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 A291907 #19 Apr 07 2022 09:21:11
%S A291907 14,16,22,32,34,38,42,46,48,58,64,66,86,88,92,96,100,102,110,114,126,
%T A291907 136,138,144,166,172,174,190,192,198,248,250,254,258,262,264,272,276,
%U A291907 288,298,300,306,326,330,342,378,406,408,414,432,490,496,498,514,516,522
%N A291907 Numbers such that the nonzero digits in the base 3 expansion consists of two 1s and one 2.
%C A291907 If k belongs to this sequence, A060350(k) and A291903(k) are divisible by 3.
%H A291907 Amiram Eldar, <a href="/A291907/b291907.txt">Table of n, a(n) for n = 1..10000</a>
%H A291907 Richard Ehrenborg and Alex Happ, <a href="https://arxiv.org/abs/1709.00778">On the powers of the descent set statistic</a>, arXiv:1709.00778 [math.CO], 2017.
%F A291907 A023693 INTERSECT A023699. - _R. J. Mathar_, Nov 10 2017
%t A291907 Select[Range[1000], DigitCount[#, 3, {1, 2}] == {2, 1} &] (* _Amiram Eldar_, Apr 07 2022 *)
%Y A291907 Cf. A007089, A023693, A023699, A060350, A291903.
%K A291907 nonn,base
%O A291907 1,1
%A A291907 _Richard Ehrenborg_, Sep 05 2017