OFFSET
5,1
LINKS
Joerg Arndt and Alois P. Heinz, Table of n, a(n) for n = 5..100
EXAMPLE
a(5) = 2: [0,0,2,1,0], [0,1,0,1,0].
MATHEMATICA
b[n_, i_, t_] := b[n, i, t] = If[n<1, 1, Expand[Sum[If[j<i, x, 1]*b[n-1, j, t + If[j == i, 1, 0]], {j, 0, t+1}]]]; a[n_] := Coefficient[b[n-1, 0, 0], x, 2]; Table[a[n], {n, 5, 40}] (* Jean-François Alcover, Feb 09 2015, after A242352 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Joerg Arndt and Alois P. Heinz, Jun 05 2014
STATUS
approved