A201700 - cp's OEIS frontend

A201700 T(n,k)=Number of nXk 0..2 arrays with rows and columns lexicographically nondecreasing read forwards and nonincreasing read backwards.

n	a(n)
1	3
2	3
3	3
4	3
5	10
6	3
7	3
8	18
9	18
10	3
11	3
12	27
13	116
14	27
15	3
16	3
17	37
18	395
19	395
20	37
21	3
22	3
23	48
24	989
25	4998
26	989
27	48
28	3
29	3
30	60
31	2068
32	35390
33	35390
34	2068
35	60
36	3
37	3
38	73
39	3838
40	167625
41	930564
42	167625
43	3838
44	73
45	3
46	3
47	87
48	6541
49	607919
50	14268351
51	14268351
52	607919
53	6541
54	87
55	3
56	3
57	102

[3, 3, 3, 3, 10, 3, 3, 18, 18, 3, 3, 27, 116, 27, 3, 3, 37, 395, 395, 37, 3, 3, 48, 989, 4998, 989, 48, 3, 3, 60, 2068, 35390, 35390, 2068, 60, 3, 3, 73, 3838, 167625, 930564, 167625, 3838, 73, 3, 3, 87, 6541, 607919, 14268351, 14268351, 607919, 6541, 87, 3, 3, 102]

cp's OEIS Frontend

A201700 T(n,k)=Number of nXk 0..2 arrays with rows and columns lexicographically nondecreasing read forwards and nonincreasing read backwards.

Table of values

List of values