A181985 - cp's OEIS frontend

A181985 Generalized Euler numbers. Square array A(n,k), n >= 1, k >= 0, read by antidiagonals. A(n,k) = n-alternating permutations of length n*k.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	5
10	1
11	1
12	1
13	19
14	61
15	1
16	1
17	1
18	69
19	1513
20	1385
21	1
22	1
23	1
24	251
25	33661
26	315523
27	50521
28	1
29	1
30	1
31	923
32	750751
33	60376809
34	136085041
35	2702765
36	1
37	1
38	1
39	3431
40	17116009
41	11593285251
42	288294050521
43	105261234643
44	199360981
45	1

[1, 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 1, 19, 61, 1, 1, 1, 69, 1513, 1385, 1, 1, 1, 251, 33661, 315523, 50521, 1, 1, 1, 923, 750751, 60376809, 136085041, 2702765, 1, 1, 1, 3431, 17116009, 11593285251, 288294050521, 105261234643, 199360981, 1]

cp's OEIS Frontend

A181985 Generalized Euler numbers. Square array A(n,k), n >= 1, k >= 0, read by antidiagonals. A(n,k) = n-alternating permutations of length n*k.

Table of values

List of values