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 A354814 #13 May 25 2024 10:42:14 %S A354814 20,936,1224,1250,1368,1656,2088,2232,2664,2952,3096,3384,3816,4248, %T A354814 4392,4824,5112,5256,5688,5976,6408,6984,7272,7416,7704,7848,8136, %U A354814 9144,9432,9864,10008,10728,10872,11304,11736,11780,12024,12456,12888,13032,13752,13896,14060,14184,14328,15192,16056,16340,16344,16488 %N A354814 Positions of +4's in A346242. %C A354814 a(56) = 18785 is the first odd term. %C A354814 Of the first 20000 terms, 11849 are multiples of 72, and apparently, for any prime p >= 13, 72*p is included in this sequence. - _Antti Karttunen_, May 24 2024 %H A354814 Antti Karttunen, <a href="/A354814/b354814.txt">Table of n, a(n) for n = 1..20000</a> %H A354814 <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a> %o A354814 (PARI) isA354814(n) = (4==A346242(n)); %Y A354814 Cf. A346242. %Y A354814 Cf. also A372564. %K A354814 nonn %O A354814 1,1 %A A354814 _Antti Karttunen_, Jun 07 2022