A278807 - cp's OEIS frontend

A278807 T(n,k)=Number of nXk 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.

n	a(n)
1	3
2	6
3	6
4	10
5	22
6	10
7	15
8	63
9	63
10	15
11	21
12	154
13	322
14	154
15	21
16	28
17	336
18	1439
19	1439
20	336
21	28
22	36
23	672
24	5767
25	12958
26	5767
27	672
28	36
29	45
30	1254
31	20972
32	110455
33	110455
34	20972
35	1254
36	45
37	55
38	2211
39	69834
40	870473
41	2179956
42	870473
43	69834
44	2211
45	55
46	66
47	3718
48	214774
49	6275546

[3, 6, 6, 10, 22, 10, 15, 63, 63, 15, 21, 154, 322, 154, 21, 28, 336, 1439, 1439, 336, 28, 36, 672, 5767, 12958, 5767, 672, 36, 45, 1254, 20972, 110455, 110455, 20972, 1254, 45, 55, 2211, 69834, 870473, 2179956, 870473, 69834, 2211, 55, 66, 3718, 214774, 6275546]

cp's OEIS Frontend

A278807 T(n,k)=Number of nXk 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.

Table of values

List of values