A264196 - cp's OEIS frontend

A264196 Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having index change +-(.,.) 0,0 0,2 or 2,1.

n	a(n)
1	2
2	18
3	180
4	864
5	4608
6	29040
7	184525
8	1089000
9	6480000
10	39335400
11	238918849
12	1439151168
13	8674025472
14	52415185536
15	316746710820
16	1912128349230
17	11543580054050
18	69713595928295
19	421013268028981
20	2542224621830400

[2, 18, 180, 864, 4608, 29040, 184525, 1089000, 6480000, 39335400, 238918849, 1439151168, 8674025472, 52415185536, 316746710820, 1912128349230, 11543580054050, 69713595928295, 421013268028981, 2542224621830400]

cp's OEIS Frontend

A264196 Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having index change +-(.,.) 0,0 0,2 or 2,1.

Table of values

List of values