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 A330774 #26 Jun 02 2020 22:14:24 %S A330774 1,1,1,5,1,11,1,61,7,15,1,259,1,19,17,1901,1,383,1,511,21,27,1,14147, %T A330774 11,31,187,859,1,1403,1,147661,29,39,25,39307,1,43,33,42351,1,2303,1, %U A330774 1843,947,51,1,1815811,15,1255,41,2479,1,46697,33,97339,45,63,1,219347,1 %N A330774 Number of n-color perfect compositions of n. %C A330774 An n-color perfect composition of v is a composition into j types of each part j whose sequence of parts contains one composition of every positive integer less than n. %H A330774 A. O. Munagi, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL23/Munagi/munagi13.html">Perfect Compositions of Numbers</a>, J. Integer Seq. 23 (2020), art. 20.5.1. %e A330774 a(5)=11 because v=5 has eleven n-color perfect compositions: (1,1,1,1,1), (1,2,2),(2,2,1), (1,2',2'), (2',2',1), (1,1,3), (3,1,1), (1,1,3'), (3',1,1), (1,1,3''), (3'',1,1). %Y A330774 Cf. A330773, A165552, A001906, A002033, A074206. %K A330774 nonn %O A330774 0,4 %A A330774 _Augustine O. Munagi_, Dec 30 2019