OFFSET
0,3
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 0..28 (terms 0..22 from Alois P. Heinz)
Wikipedia, Permanent (mathematics)
EXAMPLE
a(3) = Permanent([1, 7, 6; 1, 15, 25; 1, 31, 90]) = 3206.
MAPLE
with(LinearAlgebra):
a:= n-> `if`(n=0, 1, Permanent(Matrix(n, (i, j)-> Stirling2(n+i, j)))):
seq(a(n), n=0..10);
MATHEMATICA
a[n_] := Permanent[Table[StirlingS2[n+i, j], {i, n}, {j, n}]]; a[0] = 1; Table[a[n], {n, 0, 10}] (* Jean-François Alcover, Jan 07 2016 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Jul 25 2013
STATUS
approved