OFFSET
0,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..22
Wikipedia, Hankel matrix.
Wikipedia, Permanent (mathematics).
MAPLE
with(LinearAlgebra):
a:= n-> `if`(n=0, 1, Permanent(Matrix(n, (i, j)-> ithprime(i+j-1)))):
seq(a(n), n=0..16);
MATHEMATICA
a[n_]:=Permanent[Table[Prime[i+j-1], {i, n}, {j, n}]]; Join[{1}, Array[a, 14]] (* Stefano Spezia, Feb 03 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Jul 26 2017
STATUS
approved