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 A338479 #6 Feb 16 2025 08:34:00 %S A338479 1,2,3,4,5,1,2,3,4,5,6,2,3,4,1,2,3,3,4,5,2,3,4,4,5,6,3,1,2,2,3,4,4,2, %T A338479 3,3,4,5,5,3,4,4,2,3,1,2,3,4,3,4,2,3,4,5,4,2,3,3,4,2,3,3,4,4,5,1,2,3, %U A338479 4,5,3,2,2,3,3,4,4,3,3,4,2,3,4,3,4,4,3,3,4,2,1,2,3,2,3,3,2,3,4,3,3 %N A338479 Least number of hexagonal numbers needed to represent n. %H A338479 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HexagonalNumber.html">Hexagonal Number</a> %H A338479 <a href="/index/Pol#polygonal_numbers">Index to sequences related to polygonal numbers</a> %Y A338479 Cf. A000384, A002828, A061336, A100878, A234533, A338480, A338481. %K A338479 nonn %O A338479 1,2 %A A338479 _Ilya Gutkovskiy_, Oct 29 2020