A328725 - cp's OEIS frontend

A328725 Constant term in the expansion of (1 + x + y + z + 1/x + 1/y + 1/z + xy + yz + zx + 1/(xy) + 1/(yz) + 1/(zx) + xyz + 1/(xyz))^n.

n	a(n)
0	1
1	1
2	15
3	115
4	1255
5	13671
6	160461
7	1936425
8	24071895
9	305313415
10	3939158905
11	51521082405
12	681635916325
13	9105864515125
14	122657982366375
15	1664151758259915
16	22720725637684215
17	311933068664333175
18	4303704125389134825
19	59640225721889127525
20	829774531966386480705

[1, 1, 15, 115, 1255, 13671, 160461, 1936425, 24071895, 305313415, 3939158905, 51521082405, 681635916325, 9105864515125, 122657982366375, 1664151758259915, 22720725637684215, 311933068664333175, 4303704125389134825, 59640225721889127525, 829774531966386480705]

cp's OEIS Frontend

A328725 Constant term in the expansion of (1 + x + y + z + 1/x + 1/y + 1/z + xy + yz + zx + 1/(xy) + 1/(yz) + 1/(zx) + xyz + 1/(xyz))^n.

Table of values

List of values

cp's OEIS Frontend

A328725 Constant term in the expansion of (1 + x + y + z + 1/x + 1/y + 1/z + x*y + y*z + z*x + 1/(x*y) + 1/(y*z) + 1/(z*x) + x*y*z + 1/(x*y*z))^n.

Table of values

List of values

A328725 Constant term in the expansion of (1 + x + y + z + 1/x + 1/y + 1/z + xy + yz + zx + 1/(xy) + 1/(yz) + 1/(zx) + xyz + 1/(xyz))^n.