A382742 - cp's OEIS frontend

A382742 Square array A(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] (1/4) * (1 / (exp(x) + exp(y) - exp(x+y))^4 - 1).

n	a(n)
1	1
2	1
3	1
4	1
5	11
6	1
7	1
8	31
9	31
10	1
11	1
12	71
13	271
14	71
15	1
16	1
17	151
18	1291
19	1291
20	151
21	1
22	1
23	311
24	4951
25	12011
26	4951
27	311
28	1
29	1
30	631
31	17131
32	78451
33	78451
34	17131
35	631
36	1
37	1
38	1271
39	56071
40	426971
41	820351
42	426971
43	56071
44	1271
45	1
46	1
47	2551
48	177691
49	2093491
50	6709651
51	6709651
52	2093491
53	177691
54	2551
55	1

[1, 1, 1, 1, 11, 1, 1, 31, 31, 1, 1, 71, 271, 71, 1, 1, 151, 1291, 1291, 151, 1, 1, 311, 4951, 12011, 4951, 311, 1, 1, 631, 17131, 78451, 78451, 17131, 631, 1, 1, 1271, 56071, 426971, 820351, 426971, 56071, 1271, 1, 1, 2551, 177691, 2093491, 6709651, 6709651, 2093491, 177691, 2551, 1]

cp's OEIS Frontend

A382742 Square array A(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] (1/4) * (1 / (exp(x) + exp(y) - exp(x+y))^4 - 1).

Table of values

List of values