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 A332015 #6 Feb 16 2025 08:33:59 %S A332015 1,1,0,0,0,0,0,1,2,0,0,0,0,0,0,0,0,0,1,2,0,0,0,0,0,2,6,0,0,0,0,0,0,0, %T A332015 1,2,0,0,0,0,0,2,6,0,0,0,0,0,0,0,0,0,2,6,0,1,2,0,0,6,24,0,2,6,0,0,0,0, %U A332015 0,0,0,0,0,2,6,0,0,0,0,0,6,25,2 %N A332015 Number of compositions (ordered partitions) of n into distinct heptagonal numbers. %H A332015 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HeptagonalNumber.html">Heptagonal Number</a> %H A332015 <a href="/index/Com#comp">Index entries for sequences related to compositions</a> %e A332015 a(26) = 6 because we have [18, 7, 1], [18, 1, 7], [7, 18, 1], [7, 1, 18], [1, 18, 7] and [1, 7, 18]. %Y A332015 Cf. A000566, A279012, A279280, A322799, A331843, A331844, A332007, A332014, A332016. %K A332015 nonn %O A332015 0,9 %A A332015 _Ilya Gutkovskiy_, Feb 04 2020