A181308 - cp's OEIS frontend

A181308 Triangle read by rows: T(n,k) is the number of 2-compositions of n having k columns with an odd sum (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	3
4	0
5	4
6	0
7	16
8	0
9	8
10	14
11	0
12	52
13	0
14	16
15	0
16	104
17	0
18	144
19	0
20	32
21	64
22	0
23	460
24	0
25	368
26	0
27	64
28	0
29	616
30	0
31	1624
32	0
33	896
34	0
35	128
36	292
37	0
38	3428
39	0
40	5056
41	0
42	2112
43	0
44	256
45	0
46	3456
47	0
48	14688
49	0
50	14528
51	0
52	4864
53	0
54	512
55	1332
56	0
57	23132
58	0
59	53920
60	0
61	39488
62	0
63	11008
64	0
65	1024
66	0

[1, 0, 2, 3, 0, 4, 0, 16, 0, 8, 14, 0, 52, 0, 16, 0, 104, 0, 144, 0, 32, 64, 0, 460, 0, 368, 0, 64, 0, 616, 0, 1624, 0, 896, 0, 128, 292, 0, 3428, 0, 5056, 0, 2112, 0, 256, 0, 3456, 0, 14688, 0, 14528, 0, 4864, 0, 512, 1332, 0, 23132, 0, 53920, 0, 39488, 0, 11008, 0, 1024, 0]

cp's OEIS Frontend

A181308 Triangle read by rows: T(n,k) is the number of 2-compositions of n having k columns with an odd sum (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