A264423 - cp's OEIS frontend

A264423 Number of (2+1) X (n+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	1
2	3
3	12
4	37
5	119
6	385
7	1252
8	4061
9	13166
10	42687
11	138419
12	448847
13	1455443
14	4719435
15	15303308
16	49622768
17	160907641
18	521761825
19	1691873630
20	5486097814
21	17789312907
22	57683924784
23	187046863084
24	606521298870
25	1966716147754
26	6377306803896

[1, 3, 12, 37, 119, 385, 1252, 4061, 13166, 42687, 138419, 448847, 1455443, 4719435, 15303308, 49622768, 160907641, 521761825, 1691873630, 5486097814, 17789312907, 57683924784, 187046863084, 606521298870, 1966716147754, 6377306803896]

cp's OEIS Frontend

A264423 Number of (2+1) X (n+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