A233240 - cp's OEIS frontend

A233240 Number of 2 X n 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, 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	3
2	19
3	271
4	4504
5	79201
6	1419889
7	25622596
8	463384804
9	8386411051
10	151815188839
11	2748457460746
12	49759306786354
13	900872721644401
14	16309994546050789
15	295287194569964896
16	5346081195735699904
17	96789118201657881751

[3, 19, 271, 4504, 79201, 1419889, 25622596, 463384804, 8386411051, 151815188839, 2748457460746, 49759306786354, 900872721644401, 16309994546050789, 295287194569964896, 5346081195735699904, 96789118201657881751]

cp's OEIS Frontend

A233240 Number of 2 X n 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, 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