A229580 - cp's OEIS frontend

A229580 Number of defective 3-colorings of an n X 2 0..2 array connected horizontally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.

n	a(n)
1	1
2	6
3	40
4	224
5	1152
6	5632
7	26624
8	122880
9	557056
10	2490368
11	11010048
12	48234496
13	209715200
14	905969664
15	3892314112
16	16642998272
17	70866960384
18	300647710720
19	1271310319616
20	5360119185408
21	22539988369408
22	94557999988736

[1, 6, 40, 224, 1152, 5632, 26624, 122880, 557056, 2490368, 11010048, 48234496, 209715200, 905969664, 3892314112, 16642998272, 70866960384, 300647710720, 1271310319616, 5360119185408, 22539988369408, 94557999988736]

cp's OEIS Frontend

A229580 Number of defective 3-colorings of an n X 2 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