A328813 - cp's OEIS frontend

A328813 Constant term in the expansion of (-1 + Product_{k=1..n} (1 + x_k) + Product_{k=1..n} (1 + 1/x_k))^n.

n	a(n)
0	1
1	1
2	7
3	115
4	8071
5	1770951
6	1505946121
7	4368457532265
8	49949721645153751
9	2021436054924485283799
10	327902645022367779788597977
11	191573267131797606250658812550565
12	453516825886934673673734108656254582801

[1, 1, 7, 115, 8071, 1770951, 1505946121, 4368457532265, 49949721645153751, 2021436054924485283799, 327902645022367779788597977, 191573267131797606250658812550565, 453516825886934673673734108656254582801]

cp's OEIS Frontend

A328813 Constant term in the expansion of (-1 + Product_{k=1..n} (1 + x_k) + Product_{k=1..n} (1 + 1/x_k))^n.

Table of values

List of values