A200795 - cp's OEIS frontend

A200795 Number of n X 2 0..3 arrays with values 0..3 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.

n	a(n)
1	2
2	15
3	178
4	2614
5	40148
6	622645
7	9676364
8	150442627
9	2339207390
10	36372631268
11	565564863676
12	8794081340271
13	136740955582530
14	2126212947243743
15	33060918081784912
16	514070948321926226
17	7993393871925768124

[2, 15, 178, 2614, 40148, 622645, 9676364, 150442627, 2339207390, 36372631268, 565564863676, 8794081340271, 136740955582530, 2126212947243743, 33060918081784912, 514070948321926226, 7993393871925768124]

cp's OEIS Frontend

A200795 Number of n X 2 0..3 arrays with values 0..3 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.

Table of values

List of values