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 A379376 #5 Dec 23 2024 02:16:23
%S A379376 2,2,2,1,2,4,6,4,7,10,23,32,49,87,140,257,480,803,1311,2450
%N A379376 Number of sets of nonzero n-gonal numbers whose largest element is the n-th n-gonal number and whose sum is an n-gonal number.
%H A379376 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PolygonalNumber.html">Polygonal Number</a>
%e A379376 a(8) = 4 sets: {176}, {8, 96, 176}, {1, 8, 40, 176} and {8, 21, 40, 96, 176}.
%e A379376 a(9) = 6 sets: {261}, {9, 204, 261}, {24, 111, 261}, {75, 111, 204, 261}, {9, 24, 111, 154, 261} and {1, 9, 46, 75, 154, 204, 261}.
%Y A379376 Cf. A057145, A378961.
%K A379376 nonn,more
%O A379376 3,1
%A A379376 _Ilya Gutkovskiy_, Dec 21 2024