A209503 - cp's OEIS frontend

A209503 T(n,k)=Number of nXk 0..4 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..4 introduced in row major order.

n	a(n)
1	1
2	2
3	2
4	5
5	6
6	5
7	15
8	57
9	57
10	15
11	52
12	690
13	1938
14	690
15	52
16	202
17	9393
18	78135
19	78135
20	9393
21	202
22	855
23	133380
24	3268686
25	9502354
26	3268686
27	133380
28	855
29	3845
30	1920126
31	137627625
32	1165032679
33	1165032679
34	137627625
35	1920126
36	3845
37	18002
38	27760512

[1, 2, 2, 5, 6, 5, 15, 57, 57, 15, 52, 690, 1938, 690, 52, 202, 9393, 78135, 78135, 9393, 202, 855, 133380, 3268686, 9502354, 3268686, 133380, 855, 3845, 1920126, 137627625, 1165032679, 1165032679, 137627625, 1920126, 3845, 18002, 27760512]

cp's OEIS Frontend

A209503 T(n,k)=Number of nXk 0..4 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..4 introduced in row major order.

Table of values

List of values