A181295 - cp's OEIS frontend

A181295 Triangle read by rows: T(n,k) is the number of 2-compositions of n having k odd entries (0<=k<=n) A 2-composition of n is a nonnegative matrix with two rows, such that each column has at least one nonzero entry and whose entries sum up to n.

n	a(n)
0	1
1	0
2	2
3	2
4	0
5	5
6	0
7	12
8	0
9	12
10	7
11	0
12	46
13	0
14	29
15	0
16	58
17	0
18	152
19	0
20	70
21	24
22	0
23	297
24	0
25	466
26	0
27	169
28	0
29	256
30	0
31	1236
32	0
33	1364
34	0
35	408
36	82
37	0
38	1632
39	0
40	4575
41	0
42	3870
43	0
44	985
45	0
46	1072
47	0
48	8160
49	0
50	15702
51	0
52	10736
53	0
54	2378
55	280
56	0
57	8160
58	0
59	35320
60	0
61	51121
62	0
63	29282
64	0
65	5741
66	0

[1, 0, 2, 2, 0, 5, 0, 12, 0, 12, 7, 0, 46, 0, 29, 0, 58, 0, 152, 0, 70, 24, 0, 297, 0, 466, 0, 169, 0, 256, 0, 1236, 0, 1364, 0, 408, 82, 0, 1632, 0, 4575, 0, 3870, 0, 985, 0, 1072, 0, 8160, 0, 15702, 0, 10736, 0, 2378, 280, 0, 8160, 0, 35320, 0, 51121, 0, 29282, 0, 5741, 0]

cp's OEIS Frontend

A181295 Triangle read by rows: T(n,k) is the number of 2-compositions of n having k odd entries (0<=k<=n) A 2-composition of n is a nonnegative matrix with two rows, such that each column has at least one nonzero entry and whose entries sum up to n.

Table of values

List of values