A328751 - cp's OEIS frontend

A328751 Constant term in the expansion of (-2 + (1 + w) * (1 + x) * (1 + y) * (1 + z) + (1 + 1/w) * (1 + 1/x) * (1 + 1/y) * (1 + 1/z))^n.

n	a(n)
0	1
1	0
2	30
3	300
4	6690
5	124920
6	2778600
7	61790400
8	1452751650
9	34806097200
10	855836532180
11	21393889763400
12	543342862524000
13	13972938142363200
14	363356617578926400
15	9538720137580233600
16	252510537115100657250
17	6733792260826534332000
18	180751978201192700659500

[1, 0, 30, 300, 6690, 124920, 2778600, 61790400, 1452751650, 34806097200, 855836532180, 21393889763400, 543342862524000, 13972938142363200, 363356617578926400, 9538720137580233600, 252510537115100657250, 6733792260826534332000, 180751978201192700659500]

cp's OEIS Frontend

A328751 Constant term in the expansion of (-2 + (1 + w) * (1 + x) * (1 + y) * (1 + z) + (1 + 1/w) * (1 + 1/x) * (1 + 1/y) * (1 + 1/z))^n.

Table of values

List of values