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 A255943 #4 Mar 11 2015 19:04:44 %S A255943 5,33,141,492,1518,4320,11567,29601,72981,174652,407367,929859, %T A255943 2082284,4585752,9947997,21290967,45007311,94072878,194580977, %U A255943 398589723,809124321,1628620153,3252021750,6444843618,12681419489,24784331646,48126098418,92876836752 %N A255943 Number of collections of nonempty multisets with a total of n objects of exactly three colors. %H A255943 Alois P. Heinz, <a href="/A255943/b255943.txt">Table of n, a(n) for n = 3..1000</a> %F A255943 a(n) = A255903(n,3). %Y A255943 Column k=3 of A255903. %K A255943 nonn %O A255943 3,1 %A A255943 _Alois P. Heinz_, Mar 11 2015