A221335 - cp's OEIS frontend

A221335 Number of nX3 arrays of occupancy after each element stays put or moves to some king-move neighbor, with every occupancy equal to zero or two.

n	a(n)
1	0
2	20
3	0
4	790
5	0
6	34042
7	0
8	1470618
9	0
10	63526554
11	0
12	2744129114
13	0
14	118536728562
15	0
16	5120367434418
17	0
18	221181729631882
19	0
20	9554266491058090
21	0
22	412710429318366178
23	0
24	17827626812331482594
25	0
26	770090248640353835354
27	0

[0, 20, 0, 790, 0, 34042, 0, 1470618, 0, 63526554, 0, 2744129114, 0, 118536728562, 0, 5120367434418, 0, 221181729631882, 0, 9554266491058090, 0, 412710429318366178, 0, 17827626812331482594, 0, 770090248640353835354, 0]

cp's OEIS Frontend

A221335 Number of nX3 arrays of occupancy after each element stays put or moves to some king-move neighbor, with every occupancy equal to zero or two.

Table of values

List of values