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 A244167 #4 Jun 21 2014 16:31:25 %S A244167 1,0,0,0,1,0,0,0,71,126,336,330,776,841,1541,1821,2951,3221,5322,5697, %T A244167 43288,99626,313917,807218,2049995,4769054,10240287,22002219,45015647, %U A244167 90239153,177239582,342276724,650127448,1223160912,2275920969,4197371497,7754873919 %N A244167 Number of compositions of n in which the minimal multiplicity of parts equals 4. %H A244167 Alois P. Heinz, <a href="/A244167/b244167.txt">Table of n, a(n) for n = 4..400</a> %p A244167 b:= proc(n, i, p, k) option remember; `if`(n=0, p!, `if`(i<1, 0, %p A244167 add(b(n-i*j, i-1, p+j, k)/j!, j=[0, $max(1, k)..n/i]))) %p A244167 end: %p A244167 a:= n-> b(n$2, 0, 4) -b(n$2, 0, 5): %p A244167 seq(a(n), n=4..50); %Y A244167 Column k=4 of A242451. %K A244167 nonn %O A244167 4,9 %A A244167 _Alois P. Heinz_, Jun 21 2014