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 A057700 #8 Jun 23 2022 23:13:57 %S A057700 2,4,6,12,8,10,18,16,24,14,22,20,30,28,26,52,32,36,34,38,46,42,40,64, %T A057700 44,50,54,48,56,58,66,68,60,62,100,78,72,94,76,84,96,82,74,108,70,90, %U A057700 80,92,86,112,144,132,88,120,106,122,140,102,104,114,110,98,158 %N A057700 The next new gap between successive lucky numbers. %Y A057700 Cf. A000959, A014320, A031883. %K A057700 easy,nonn %O A057700 0,1 %A A057700 _Naohiro Nomoto_, Oct 23 2000 %E A057700 More terms from _Sascha Kurz_, Mar 24 2002 %E A057700 a(51) onward corrected by _Sean A. Irvine_, Jun 23 2022