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 A025491 #18 May 06 2022 13:13:51 %S A025491 1,12,18,19,79,132,161,179,199,239,318,461,619,672,779,959,1098,1381, %T A025491 1499,1559,1579,1601,1621,1758,1859,1901,1981,2161,2179,2279,2519, %U A025491 2819,2839,2952,4019,4039,4261,4499,4601,4741,4859,5081,5118,5141,5658,5921 %N A025491 In base 11, a(n) = sum of digits of Lucas(a(n)). %C A025491 Searched up to index 7500000. - _Sven Simon_, Sep 29 2006 %H A025491 Sven Simon, <a href="/A025491/b025491.txt">Table of n, a(n) for n = 1..284</a> [May be complete] %Y A025491 Cf. A025490 (similar, with Fibonacci). %K A025491 base,nonn %O A025491 1,2 %A A025491 _David W. Wilson_