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 A350198 #6 Feb 16 2025 08:34:02 %S A350198 1,81,189,270,343,342,456,538,557,531,651,636,676,658,723,804,784,777, %T A350198 770,825,844,865,890,975,960,941,966,983,959,1030,1040,1012,1080,1053, %U A350198 1039,1119,1046,1078,1079,1064,1072,1173,1071,1180,1152,1193,1194,1226,1220,1247 %N A350198 a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero heptagonal numbers in exactly n ways, or 0 if no such integer exists. %H A350198 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HeptagonalNumber.html">Heptagonal Number</a> %Y A350198 Cf. A000566, A097563, A274046, A279280, A350196, A350197, A350199. %K A350198 nonn %O A350198 1,2 %A A350198 _Ilya Gutkovskiy_, Dec 19 2021