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 A317440 #5 Jul 28 2018 11:27:43 %S A317440 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48, %T A317440 50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94, %U A317440 96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128 %N A317440 Numbers missing from A317438. %C A317440 Equal to A299174 for n<=11361; a(11362)=22723, A299174(11362)=22724. %C A317440 A317438 is finite, so this sequence is infinite. %C A317440 See A317438 for further information. %H A317440 Daniël Karssen, <a href="/A317440/b317440.txt">Table of n, a(n) for n = 1..245060</a> %Y A317440 Cf. A317438, A299174. %K A317440 nonn %O A317440 1,1 %A A317440 _Daniël Karssen_, Jul 28 2018