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 A305441 #15 Jun 01 2018 09:10:49 %S A305441 2,3,4,7,8,9,10,11,14,15,16,19,20,21,24,25,26,29,30,31,32,33,37,38,42, %T A305441 43,44,45,46,49,50,52,54,55,57,59,60,61,65,66,67,69,70,72,74,75,77,80, %U A305441 81,84,89,93,94,95,96,97,100,101,102,107,112,114,116,121,124,128 %N A305441 Indices k such that A305355(k) = 0. %C A305441 Conjecture: for k > 10316 there are no more terms in this sequence. %H A305441 Seiichi Manyama, <a href="/A305441/b305441.txt">Table of n, a(n) for n = 1..227</a> %e A305441 2 is in the sequence because A305355( 2) = 0. %e A305441 10316 is in the sequence because A305355(10316) = 0. %Y A305441 Cf. A276517, A305355, A305440. %K A305441 nonn %O A305441 1,1 %A A305441 _Seiichi Manyama_, Jun 01 2018