A252820 - cp's OEIS frontend

A252820 T(n,k)=Number of nXk nonnegative integer arrays with upper left 0 and every value within 2 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	7
8	17
9	17
10	7
11	11
12	40
13	63
14	40
15	11
16	16
17	81
18	187
19	187
20	81
21	16
22	22
23	147
24	468
25	684
26	468
27	147
28	22
29	29
30	246
31	1032
32	2078
33	2078
34	1032
35	246
36	29
37	37
38	387
39	2067
40	5490
41	7564
42	5490
43	2067
44	387
45	37
46	46
47	580
48	3840
49	13015
50	23664
51	23664
52	13015
53	3840
54	580
55	46
56	56
57	836
58	6716

[1, 2, 2, 4, 6, 4, 7, 17, 17, 7, 11, 40, 63, 40, 11, 16, 81, 187, 187, 81, 16, 22, 147, 468, 684, 468, 147, 22, 29, 246, 1032, 2078, 2078, 1032, 246, 29, 37, 387, 2067, 5490, 7564, 5490, 2067, 387, 37, 46, 580, 3840, 13015, 23664, 23664, 13015, 3840, 580, 46, 56, 836, 6716]

cp's OEIS Frontend

A252820 T(n,k)=Number of nXk nonnegative integer arrays with upper left 0 and every value within 2 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