A201539 - cp's OEIS frontend

A201539 T(n,k)=Number of nXk 0..2 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor.

n	a(n)
1	0
2	3
3	3
4	3
5	9
6	3
7	6
8	25
9	25
10	6
11	9
12	69
13	111
14	69
15	9
16	13
17	175
18	633
19	633
20	175
21	13
22	18
23	410
24	3354
25	7799
26	3354
27	410
28	18
29	24
30	899
31	16393
32	91425
33	91425
34	16393
35	899
36	24
37	31
38	1859
39	72811
40	983981
41	2446147
42	983981
43	72811
44	1859
45	31
46	39
47	3649
48	293831
49	9526987
50	61807736

[0, 3, 3, 3, 9, 3, 6, 25, 25, 6, 9, 69, 111, 69, 9, 13, 175, 633, 633, 175, 13, 18, 410, 3354, 7799, 3354, 410, 18, 24, 899, 16393, 91425, 91425, 16393, 899, 24, 31, 1859, 72811, 983981, 2446147, 983981, 72811, 1859, 31, 39, 3649, 293831, 9526987, 61807736]

cp's OEIS Frontend

A201539 T(n,k)=Number of nXk 0..2 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor.

Table of values

List of values