A185567 - cp's OEIS frontend

A185567 T(n,k)=1/4 the number of nXk 0..3 arrays with no element equal both to the element above and to the element to its left.

n	a(n)
1	1
2	4
3	4
4	16
5	60
6	16
7	64
8	900
9	900
10	64
11	256
12	13500
13	50580
14	13500
15	256
16	1024
17	202500
18	2842560
19	2842560
20	202500
21	1024
22	4096
23	3037500
24	159749820
25	598507920
26	159749820
27	3037500
28	4096
29	16384
30	45562500
31	8977824540
32	126017211780
33	126017211780

[1, 4, 4, 16, 60, 16, 64, 900, 900, 64, 256, 13500, 50580, 13500, 256, 1024, 202500, 2842560, 2842560, 202500, 1024, 4096, 3037500, 159749820, 598507920, 159749820, 3037500, 4096, 16384, 45562500, 8977824540, 126017211780, 126017211780]

cp's OEIS Frontend

A185567 T(n,k)=1/4 the number of nXk 0..3 arrays with no element equal both to the element above and to the element to its left.

Table of values

List of values