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 A387558 #6 Sep 02 2025 14:08:36 %S A387558 2,3,4,7,8,9,10,13,14,15,19,20,21,22,23,27,28,29,30,33,34,35,36,37,38, %T A387558 39,40,46,47,48,53,54,55,56,59,60,61,62,63,64,65,66,67,68,69,74,75,78, %U A387558 79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97 %N A387558 Numbers k such that A386482(k) is even. %H A387558 Rémy Sigrist, <a href="/A387558/b387558.txt">Table of n, a(n) for n = 1..10306</a> %H A387558 Rémy Sigrist, <a href="/A387558/a387558.gp.txt">PARI program</a> %F A387558 A387544(n) = A386482(a(n)) / 2. %e A387558 A386482(46) = 60 is even, so 46 belongs to the sequence. %o A387558 (PARI) \\ See Links section. %Y A387558 Cf. A386482, A387544. %K A387558 nonn,new %O A387558 1,1 %A A387558 _Rémy Sigrist_, Sep 02 2025