A221196 - cp's OEIS frontend

A221196 Number of n X 3 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.

n	a(n)
1	2
2	10
3	46
4	212
5	976
6	4492
7	20672
8	95128
9	437752
10	2014400
11	9269632
12	42655888
13	196288736
14	903257824
15	4156502752
16	19126892096
17	88015820416
18	405020564416
19	1863774679808
20	8576493051520
21	39466269101440
22	181611106939904

[2, 10, 46, 212, 976, 4492, 20672, 95128, 437752, 2014400, 9269632, 42655888, 196288736, 903257824, 4156502752, 19126892096, 88015820416, 405020564416, 1863774679808, 8576493051520, 39466269101440, 181611106939904]

cp's OEIS Frontend

A221196 Number of n X 3 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.

Table of values

List of values