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 A023601 #5 Jun 26 2025 14:33:52 %S A023601 1,3,6,11,17,24,33,44,56,69,84,101,120,140,161,184,209,236,265,295, %T A023601 326,359,394,431,470,511,553,596,641,688,737,788,841,896,952,1009, %U A023601 1068,1129,1192,1257,1324,1393,1464,1536,1609,1684,1761,1840,1921 %N A023601 Convolution of A023532 and odd numbers. %Y A023601 Cf. A023532. %K A023601 nonn %O A023601 1,2 %A A023601 _Clark Kimberling_