A205754 - cp's OEIS frontend

A205754 Number of 3X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order.

n	a(n)
1	74
2	284
3	1074
4	4256
5	16986
6	68692
7	279504
8	1143842
9	4699050
10	19364230
11	79981548
12	330948764
13	1371291912
14	5688057508
15	23613366558
16	98091679448
17	407685449946
18	1695079113772
19	7050018583818
20	29329074681854
21	122037419381370

[74, 284, 1074, 4256, 16986, 68692, 279504, 1143842, 4699050, 19364230, 79981548, 330948764, 1371291912, 5688057508, 23613366558, 98091679448, 407685449946, 1695079113772, 7050018583818, 29329074681854, 122037419381370]

cp's OEIS Frontend

A205754 Number of 3X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order.

Table of values

List of values