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 A014122 #20 Oct 19 2018 09:56:13 %S A014122 0,1,2,3,4,5,7,8,9,10,11,13,15,17,19,23,25,26,28,29,31,33,35,37,41,43, %T A014122 47,49,55,59,61,63,65,67,73,77,79,80,82,83,85,89,91,97,101,113,115, %U A014122 119,125,127,129,131,137,139,145,155,175,179,209,211,217,227 %N A014122 Numbers of form |2^i +- 3^j|. %C A014122 Based on checking i <= 100 and j <= 60. %C A014122 Existing sequence correct for j <= 200000. - _Sean A. Irvine_, Oct 04 2018 %C A014122 2*k is a term iff 2*k = 3^j +- 1. - _Sean A. Irvine_, Oct 04 2018 %C A014122 Existing sequence correct for j <= 10^6. - _David A. Corneth_, Oct 04 2018 %C A014122 3*k is a term iff 3*k = 2^j +- 1. - _Jon E. Schoenfield_, Oct 04 2018 %Y A014122 Cf. A014121, A056850. %K A014122 nonn %O A014122 1,3 %A A014122 Richard C. Schroeppel %E A014122 Constraint on search moved from title to comments by _Sean A. Irvine_, Oct 04 2018