A327751 - cp's OEIS frontend

A327751 Square array T(n,k), n>=0, k>=0, read by antidiagonals, where T(n,k) is the constant term in the expansion of (-1 + Product_{j=1..n} (1 + x_j + 1/x_j))^k.

n	a(n)
0	1
1	0
2	1
3	0
4	0
5	1
6	0
7	2
8	0
9	1
10	0
11	0
12	8
13	0
14	1
15	0
16	6
17	24
18	26
19	0
20	1
21	0
22	0
23	216
24	264
25	80
26	0
27	1
28	0
29	20
30	1200
31	5646
32	2160
33	242
34	0
35	1
36	0
37	0
38	8840
39	101520
40	121200
41	16080
42	728
43	0
44	1
45	0
46	70
47	58800
48	2103740
49	6136800
50	2410326
51	115464
52	2186
53	0
54	1

[1, 0, 1, 0, 0, 1, 0, 2, 0, 1, 0, 0, 8, 0, 1, 0, 6, 24, 26, 0, 1, 0, 0, 216, 264, 80, 0, 1, 0, 20, 1200, 5646, 2160, 242, 0, 1, 0, 0, 8840, 101520, 121200, 16080, 728, 0, 1, 0, 70, 58800, 2103740, 6136800, 2410326, 115464, 2186, 0, 1]

cp's OEIS Frontend

A327751 Square array T(n,k), n>=0, k>=0, read by antidiagonals, where T(n,k) is the constant term in the expansion of (-1 + Product_{j=1..n} (1 + x_j + 1/x_j))^k.

Table of values

List of values