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 A227561 #7 Feb 09 2016 11:49:50 %S A227561 1,1,3,4,6,9,14,16,22,28,35,42,53,62,73,86,98,114,134,148,168,192,212, %T A227561 235,264,289,320,355,385,419,461,495,538,586,626,674,734,779,835,898, %U A227561 951,1013,1087,1147,1219,1300,1367,1447,1542,1614,1701,1801,1887,1982 %N A227561 Number of partitions of n into distinct parts with boundary size 4. %C A227561 The boundary size is the number of parts having fewer than two neighbors. %H A227561 Alois P. Heinz, <a href="/A227561/b227561.txt">Table of n, a(n) for n = 12..1000</a> %Y A227561 Column k=4 of A227345, A227551. %K A227561 nonn %O A227561 12,3 %A A227561 _Alois P. Heinz_, Jul 16 2013