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 A334036 #8 Feb 16 2025 08:34:00 %S A334036 1,81,468,1911,6237,11781,21021,51051,81081,121737,261261,318087, %T A334036 513513,671517,1145529,1072071,1582581,1378377,3216213,2513511, %U A334036 4135131,4700619,5666661,11792781,8729721,11810799,15444891,19270251,15162147,24657633,28945917,26189163 %N A334036 a(n) is the least integer that can be expressed as the difference of two heptagonal numbers in exactly n ways. %C A334036 The least integer that can be expressed as the sum of one or more consecutive numbers congruent to 1 mod 5 in exactly n ways. %C A334036 Index of first occurrence of n in A333817. %H A334036 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HeptagonalNumber.html">Heptagonal Number</a> %H A334036 <a href="/index/Pol#polygonal_numbers">Index to sequences related to polygonal numbers</a> %Y A334036 Cf. A000566, A016861, A038547, A068314, A333817, A334011, A334034, A334035, A334037. %K A334036 nonn %O A334036 1,2 %A A334036 _Ilya Gutkovskiy_, Apr 12 2020 %E A334036 More terms from _Jinyuan Wang_, Apr 13 2020