A222872 - cp's OEIS frontend

A222872 Number of nX2 0..3 arrays with no more than floor(nX2/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

n	a(n)
1	1
2	11
3	131
4	2150
5	32491
6	533186
7	8362152
8	135650378
9	2155759835
10	34780282521
11	555913562689
12	8947148045345
13	143379589806584
14	2305060329759954
15	36982483115935396
16	594232174227590798
17	9538759468134692551

[1, 11, 131, 2150, 32491, 533186, 8362152, 135650378, 2155759835, 34780282521, 555913562689, 8947148045345, 143379589806584, 2305060329759954, 36982483115935396, 594232174227590798, 9538759468134692551]

cp's OEIS Frontend

A222872 Number of nX2 0..3 arrays with no more than floor(nX2/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

Table of values

List of values