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 A031898 #7 Nov 16 2019 03:28:47 %S A031898 495,1401,1419,1503,1749,1899,2379,2445,3075,3243,3411,3579,3795,3849, %T A031898 3915,4269,4629,4725,5433,6195,6447,7215,7419,7533,8175,8331,8961, %U A031898 9315,10095,10239,10443,10509,10635,10731,11097,11583,11643 %N A031898 Lucky numbers with size of gaps equal to 16 (lower terms). %H A031898 Amiram Eldar, <a href="/A031898/b031898.txt">Table of n, a(n) for n = 1..10000</a> %Y A031898 Cf. A000959, A031899. %K A031898 nonn %O A031898 1,1 %A A031898 _Patrick De Geest_