A328874 - cp's OEIS frontend

A328874 Constant term in the expansion of (-1 + (1 + x + 1/x) * (1 + y + 1/y) * (1 + z + 1/z))^n.

n	a(n)
0	1
1	0
2	26
3	264
4	5646
5	101520
6	2103740
7	43632960
8	942507790
9	20685977760
10	462661368876
11	10483696885200
12	240373512418116
13	5564581640601984
14	129901678525143096
15	3054381796821779424
16	72272856926974596750
17	1719662128611006026304
18	41120565854695068532076
19	987633314722818034066224

[1, 0, 26, 264, 5646, 101520, 2103740, 43632960, 942507790, 20685977760, 462661368876, 10483696885200, 240373512418116, 5564581640601984, 129901678525143096, 3054381796821779424, 72272856926974596750, 1719662128611006026304, 41120565854695068532076, 987633314722818034066224]

cp's OEIS Frontend

A328874 Constant term in the expansion of (-1 + (1 + x + 1/x) * (1 + y + 1/y) * (1 + z + 1/z))^n.

Table of values

List of values