A233106 - cp's OEIS frontend

A233106 Number of n X 1 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

n	a(n)
1	1
2	2
3	6
4	23
5	99
6	452
7	2136
8	10313
9	50469
10	249062
11	1235466
12	6147803
13	30650439
14	152986472
15	764135196
16	3818284493
17	19084248009
18	95399716682
19	476934013326
20	2384476356383
21	11921800651179
22	59607259863692
23	298031069141856

[1, 2, 6, 23, 99, 452, 2136, 10313, 50469, 249062, 1235466, 6147803, 30650439, 152986472, 764135196, 3818284493, 19084248009, 95399716682, 476934013326, 2384476356383, 11921800651179, 59607259863692, 298031069141856]

cp's OEIS Frontend

A233106 Number of n X 1 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

Table of values

List of values