A264622 - cp's OEIS frontend

A264622 Number of (n+1) X (1+1) arrays of permutations of 0..n*2+1 with each element having directed index change -2,0 -1,0 0,-1 or 1,1.

n	a(n)
1	0
2	1
3	2
4	1
5	1
6	4
7	6
8	5
9	7
10	15
11	21
12	23
13	34
14	58
15	80
16	101
17	149
18	230
19	319
20	431
21	629
22	928
23	1299
24	1810
25	2617
26	3784
27	5336
28	7536
29	10828
30	15521
31	21992
32	31236
33	44713
34	63862
35	90741
36	129177
37	184524
38	263178
39	374521
40	533619
41	761403
42	1085401
43	1545839
44	2203162

[0, 1, 2, 1, 1, 4, 6, 5, 7, 15, 21, 23, 34, 58, 80, 101, 149, 230, 319, 431, 629, 928, 1299, 1810, 2617, 3784, 5336, 7536, 10828, 15521, 21992, 31236, 44713, 63862, 90741, 129177, 184524, 263178, 374521, 533619, 761403, 1085401, 1545839, 2203162]

cp's OEIS Frontend

A264622 Number of (n+1) X (1+1) arrays of permutations of 0..n*2+1 with each element having directed index change -2,0 -1,0 0,-1 or 1,1.

Table of values

List of values