A369923 - cp's OEIS frontend

A369923 Array read by antidiagonals: A(n,k) is the number of permutations of n copies of 1..k with values introduced in order and without cyclically adjacent elements equal.

n	a(n)
1	0
2	1
3	0
4	1
5	1
6	0
7	1
8	4
9	1
10	0
11	1
12	31
13	22
14	1
15	0
16	1
17	293
18	1415
19	134
20	1
21	0
22	1
23	3326
24	140343
25	75843
26	866
27	1
28	0
29	1
30	44189
31	20167651
32	83002866
33	4446741
34	5812
35	1
36	0
37	1
38	673471
39	3980871156
40	158861646466
41	55279816356
42	276154969
43	40048
44	1
45	0

[0, 1, 0, 1, 1, 0, 1, 4, 1, 0, 1, 31, 22, 1, 0, 1, 293, 1415, 134, 1, 0, 1, 3326, 140343, 75843, 866, 1, 0, 1, 44189, 20167651, 83002866, 4446741, 5812, 1, 0, 1, 673471, 3980871156, 158861646466, 55279816356, 276154969, 40048, 1, 0]

cp's OEIS Frontend

A369923 Array read by antidiagonals: A(n,k) is the number of permutations of n copies of 1..k with values introduced in order and without cyclically adjacent elements equal.

Table of values

List of values