A209094 - cp's OEIS frontend

A209094 Number of n X 2 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

n	a(n)
1	2
2	11
3	82
4	612
5	4568
6	34096
7	254496
8	1899584
9	14178688
10	105831168
11	789934592
12	5896152064
13	44009478144
14	328491216896
15	2451891822592
16	18301169713152
17	136601790414848
18	1019609644466176
19	7610469994070016
20	56805321374695424

[2, 11, 82, 612, 4568, 34096, 254496, 1899584, 14178688, 105831168, 789934592, 5896152064, 44009478144, 328491216896, 2451891822592, 18301169713152, 136601790414848, 1019609644466176, 7610469994070016, 56805321374695424]

cp's OEIS Frontend

A209094 Number of n X 2 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

List of values