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 A347731 #5 Sep 11 2021 21:25:46 %S A347731 1,1,1,2,2,3,2,5,3,3,7,2,7,5,6,4,7,9,3,12,1,9,11,6,8,8,9,8,13,2,11,13, %T A347731 12,6,11,9,6,20,5,14,12,9,12,11,12,11,16,9,11,20,6,10,27,6,12,9,12,20, %U A347731 17,15,8,23,9,13,14,11,21,23,9,8,23,15,18,17,12,15 %N A347731 Number of compositions (ordered partitions) of n into at most 3 triangular numbers. %Y A347731 Cf. A000217, A023361, A053604, A347730, A347732, A347733, A347734. %K A347731 nonn %O A347731 0,4 %A A347731 _Ilya Gutkovskiy_, Sep 11 2021