A239530 - cp's OEIS frontend

A239530 Number of (n+1) X (1+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order.

n	a(n)
1	1
2	1
3	6
4	13
5	47
6	128
7	405
8	1181
9	3598
10	10705
11	32259
12	96544
13	290009
14	869417
15	2609238
16	7826117
17	23480935
18	70438624
19	211322637
20	633956965
21	1901888606
22	5705637161
23	17116957851
24	51350798528
25	154052516977
26	462157354513
27	1386472381350

[1, 1, 6, 13, 47, 128, 405, 1181, 3598, 10705, 32259, 96544, 290009, 869417, 2609238, 7826117, 23480935, 70438624, 211322637, 633956965, 1901888606, 5705637161, 17116957851, 51350798528, 154052516977, 462157354513, 1386472381350]

cp's OEIS Frontend

A239530 Number of (n+1) X (1+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order.

Table of values

List of values