A382801 - cp's OEIS frontend

A382801 Square array A(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] (1/2) * (1 / (1 - log(1-x) * log(1-y))^2 - 1).

n	a(n)
1	1
2	1
3	1
4	2
5	7
6	2
7	6
8	20
9	20
10	6
11	24
12	72
13	130
14	72
15	24
16	120
17	324
18	642
19	642
20	324
21	120
22	720
23	1764
24	3468
25	4794
26	3468
27	1764
28	720
29	5040
30	11304
31	21372
32	32964
33	32964
34	21372
35	11304
36	5040
37	40320
38	83448
39	150120
40	238404
41	290976
42	238404
43	150120
44	83448
45	40320

[1, 1, 1, 2, 7, 2, 6, 20, 20, 6, 24, 72, 130, 72, 24, 120, 324, 642, 642, 324, 120, 720, 1764, 3468, 4794, 3468, 1764, 720, 5040, 11304, 21372, 32964, 32964, 21372, 11304, 5040, 40320, 83448, 150120, 238404, 290976, 238404, 150120, 83448, 40320]

cp's OEIS Frontend

A382801 Square array A(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] (1/2) * (1 / (1 - log(1-x) * log(1-y))^2 - 1).

Table of values

List of values