A369372 - cp's OEIS frontend

A369372 a(n) is the constant term in expansion of Product_{k=1..n} (x^k + 1 + 1/x^k)^3.

n	a(n)
0	1
1	7
2	85
3	1437
4	26707
5	534513
6	11255951
7	245612031
8	5503639327
9	125900330437
10	2928092906281
11	69026845135479
12	1645689594867257
13	39611576627651927
14	961279033420170871
15	23494000801494204647
16	577777092945262623161
17	14287061769367391787065
18	355010279665452190629001

[1, 7, 85, 1437, 26707, 534513, 11255951, 245612031, 5503639327, 125900330437, 2928092906281, 69026845135479, 1645689594867257, 39611576627651927, 961279033420170871, 23494000801494204647, 577777092945262623161, 14287061769367391787065, 355010279665452190629001]

cp's OEIS Frontend

A369372 a(n) is the constant term in expansion of Product_{k=1..n} (x^k + 1 + 1/x^k)^3.

Table of values

List of values