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 A373142 #7 May 26 2024 16:20:36 %S A373142 3,4,5,7,11,13,17,19,23,27,29,31,36,37,41,43,45,47,48,53,59,60,61,63, %T A373142 64,67,71,73,75,79,80,83,84,89,97,99,100,101,103,105,107,109,112,113, %U A373142 117,125,127,131,132,137,139,140,147,149,151,153,156,157,163,165,167,171,173,175,176,179,181,191,193,195,196 %N A373142 Numbers k such that A276085(k) is of the form 4m+2, where A276085 is the primorial base log-function. %H A373142 Antti Karttunen, <a href="/A373142/b373142.txt">Table of n, a(n) for n = 1..10000</a> %H A373142 <a href="/index/Pri#prime_indices">Index entries for sequences computed from indices in prime factorization</a> %H A373142 <a href="/index/Pri#primorial_numbers">Index entries for sequences related to primorial numbers</a> %o A373142 (PARI) \\ See A373141. %Y A373142 Cf. A002110, A276085, A373141 (characteristic function). %Y A373142 Setwise difference A003159 \ A369002. %K A373142 nonn %O A373142 1,1 %A A373142 _Antti Karttunen_, May 26 2024