A252828 - cp's OEIS frontend

A252828 T(n,k)=Number of nXk nonnegative integer arrays with upper left 0 and every value within 3 of its city block distance from the upper left and every value increasing by 0 or 1 with every step right or down.

n	a(n)
1	1
2	2
3	2
4	4
5	6
6	4
7	8
8	18
9	18
10	8
11	15
12	53
13	81
14	53
15	15
16	26
17	142
18	340
19	340
20	142
21	26
22	42
23	339
24	1238
25	1920
26	1238
27	339
28	42
29	64
30	729
31	3891
32	9075
33	9075
34	3891
35	729
36	64
37	93
38	1437
39	10761
40	36292
41	54376
42	36292
43	10761
44	1437
45	93
46	130
47	2638
48	26764
49	125892
50	271846
51	271846
52	125892

[1, 2, 2, 4, 6, 4, 8, 18, 18, 8, 15, 53, 81, 53, 15, 26, 142, 340, 340, 142, 26, 42, 339, 1238, 1920, 1238, 339, 42, 64, 729, 3891, 9075, 9075, 3891, 729, 64, 93, 1437, 10761, 36292, 54376, 36292, 10761, 1437, 93, 130, 2638, 26764, 125892, 271846, 271846, 125892]

cp's OEIS Frontend

A252828 T(n,k)=Number of nXk nonnegative integer arrays with upper left 0 and every value within 3 of its city block distance from the upper left and every value increasing by 0 or 1 with every step right or down.

Table of values

List of values