A264417 - cp's OEIS frontend

A264417 Number of (n+1)X(2+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,1 2,2 1,0 -1,2 -2,-1 or -1,-1.

n	a(n)
1	2
2	3
3	20
4	85
5	351
6	1462
7	6021
8	25188
9	104870
10	437164
11	1821829
12	7592125
13	31637827
14	131836355
15	549380672
16	2289347792
17	9540065618
18	39754914509
19	165664757540
20	690350003398
21	2876792156808
22	11988025615109
23	49955906989734

[2, 3, 20, 85, 351, 1462, 6021, 25188, 104870, 437164, 1821829, 7592125, 31637827, 131836355, 549380672, 2289347792, 9540065618, 39754914509, 165664757540, 690350003398, 2876792156808, 11988025615109, 49955906989734]

cp's OEIS Frontend

A264417 Number of (n+1)X(2+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,1 2,2 1,0 -1,2 -2,-1 or -1,-1.

Table of values

List of values