A221726 - cp's OEIS frontend

A221726 Number of nX3 arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with every occupancy equal to zero or two.

n	a(n)
1	0
2	16
3	0
4	464
5	0
6	13948
7	0
8	420736
9	0
10	12695288
11	0
12	383074904
13	0
14	11559126552
15	0
16	348791805904
17	0
18	10524646286488
19	0
20	317576778411352
21	0
22	9582745781519416
23	0
24	289155325092787296
25	0
26	8725140362031620984
27	0
28	263277441988312544616
29	0

[0, 16, 0, 464, 0, 13948, 0, 420736, 0, 12695288, 0, 383074904, 0, 11559126552, 0, 348791805904, 0, 10524646286488, 0, 317576778411352, 0, 9582745781519416, 0, 289155325092787296, 0, 8725140362031620984, 0, 263277441988312544616, 0]

cp's OEIS Frontend

A221726 Number of nX3 arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with every occupancy equal to zero or two.

Table of values

List of values