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 A031893 #8 Nov 16 2019 03:29:03 %S A031893 151,283,349,409,529,601,631,841,883,895,991,1021,1039,1117,1219,1261, %T A031893 1339,1543,1597,1819,1879,1933,2095,2173,2311,2365,2635,2725,2773, %U A031893 2797,2887,2923,2953,2971,3049,3109,3121,3133,3163,3223,3685 %N A031893 Lucky numbers with size of gaps equal to 10 (upper terms). %H A031893 Amiram Eldar, <a href="/A031893/b031893.txt">Table of n, a(n) for n = 1..10000</a> %Y A031893 Cf. A000959, A031892. %K A031893 nonn %O A031893 1,1 %A A031893 _Patrick De Geest_