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 A334037 #7 Feb 16 2025 08:34:00 %S A334037 1,133,560,1729,4160,10640,14560,22400,44800,58240,138320,98560, %T A334037 123200,203840,246400,394240,320320,492800,800800,640640,1047200, %U A334037 1823360,1724800,1281280,2094400,1601600,2475200,2722720,4484480,3203200,5532800,6697600,5445440,7958720 %N A334037 a(n) is the least integer that can be expressed as the difference of two octagonal numbers in exactly n ways. %C A334037 The least integer that can be expressed as the sum of one or more consecutive numbers congruent to 1 mod 6 in exactly n ways. %C A334037 Index of first occurrence of n in A333818. %H A334037 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/OctagonalNumber.html">Octagonal Number</a> %H A334037 <a href="/index/Pol#polygonal_numbers">Index to sequences related to polygonal numbers</a> %Y A334037 Cf. A000567, A016921, A038547, A068314, A333818, A334012, A334034, A334035, A334036. %K A334037 nonn %O A334037 1,2 %A A334037 _Ilya Gutkovskiy_, Apr 12 2020 %E A334037 More terms from _Jinyuan Wang_, Apr 13 2020