A350308 - cp's OEIS frontend

A350308 a(n) is the constant term in the expansion of Product_{j=1..n} (Sum_{k=-j..j} x^k)^j.

n	a(n)
0	1
1	1
2	13
3	2431
4	10027503
5	1107781071903
6	3893880730064443963
7	506016205547402043327062969
8	2774765502272595019563619139799271431
9	722310089115924894687149792741562790592722949523

[1, 1, 13, 2431, 10027503, 1107781071903, 3893880730064443963, 506016205547402043327062969, 2774765502272595019563619139799271431, 722310089115924894687149792741562790592722949523]

cp's OEIS Frontend

A350308 a(n) is the constant term in the expansion of Product_{j=1..n} (Sum_{k=-j..j} x^k)^j.

Table of values

List of values