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 A302868 #7 Apr 15 2018 13:15:14 %S A302868 1,6,21,31,46,81,101,141,181,221,261,311,381,436,521,581,651,721,836, %T A302868 911,1001,1121,1211,1321,1451,1561,1671,1791,1951,2081,2201,2391,2521, %U A302868 2676,2861,3021,3166,3391,3541,3731,3941,4131,4301,4501,4741,4951,5131,5426 %N A302868 Partial sums of A302841. %H A302868 Rémy Sigrist, <a href="/A302868/b302868.txt">Table of n, a(n) for n = 0..2584</a> %Y A302868 Cf. A302841. %K A302868 nonn %O A302868 0,2 %A A302868 _Rémy Sigrist_, Apr 15 2018