A229588 - cp's OEIS frontend

A229588 Number of defective 3-colorings of a 3 X n 0..2 array connected horizontally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.

n	a(n)
1	0
2	40
3	264
4	1620
5	9156
6	49848
7	264300
8	1374048
9	7036116
10	35600376
11	178380156
12	886616784
13	4377006372
14	21483378600
15	104919416268
16	510169843584
17	2471194910580
18	11929478452824
19	57413851328028
20	275566856985648

[0, 40, 264, 1620, 9156, 49848, 264300, 1374048, 7036116, 35600376, 178380156, 886616784, 4377006372, 21483378600, 104919416268, 510169843584, 2471194910580, 11929478452824, 57413851328028, 275566856985648]

cp's OEIS Frontend

A229588 Number of defective 3-colorings of a 3 X n 0..2 array connected horizontally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.

Table of values

List of values