A221689 - cp's OEIS frontend

A221689 Number of n X 3 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction.

n	a(n)
1	6
2	152
3	3112
4	63676
5	1302720
6	26650988
7	545221260
8	11154026300
9	228186749552
10	4668196767064
11	95500991265668
12	1953739262283024
13	39969188300499044
14	817681276128120100
15	16727952148700884996
16	342216938625170086928

[6, 152, 3112, 63676, 1302720, 26650988, 545221260, 11154026300, 228186749552, 4668196767064, 95500991265668, 1953739262283024, 39969188300499044, 817681276128120100, 16727952148700884996, 342216938625170086928]

cp's OEIS Frontend

A221689 Number of n X 3 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction.

Table of values

List of values