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 A302869 #7 Apr 15 2018 13:15:01 %S A302869 1,6,11,21,51,71,101,136,161,216,256,321,371,421,491,571,651,741,821, %T A302869 891,1001,1106,1211,1291,1421,1541,1681,1811,1951,2051,2216,2361,2531, %U A302869 2696,2811,2991,3171,3371,3551,3691,3891,4106,4316,4541,4751,4911,5151,5391 %N A302869 Partial sums of A302842. %H A302869 Rémy Sigrist, <a href="/A302869/b302869.txt">Table of n, a(n) for n = 0..1597</a> %Y A302869 Cf. A302842. %K A302869 nonn %O A302869 0,2 %A A302869 _Rémy Sigrist_, Apr 15 2018