A181293 - cp's OEIS frontend

A181293 Triangle read by rows: T(n,k) is the number of 2-compositions of n having k 0's (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	1
4	2
5	4
6	2
7	6
8	8
9	8
10	4
11	14
12	24
13	24
14	16
15	8
16	32
17	64
18	80
19	64
20	32
21	16
22	72
23	164
24	240
25	240
26	160
27	64
28	32
29	160
30	408
31	680
32	800
33	672
34	384
35	128
36	64
37	352
38	992
39	1848
40	2480
41	2464
42	1792
43	896
44	256
45	128
46	768
47	2368
48	4864
49	7296
50	8288
51	7168
52	4608
53	2048
54	512
55	256
56	1664
57	5568

[1, 0, 2, 1, 2, 4, 2, 6, 8, 8, 4, 14, 24, 24, 16, 8, 32, 64, 80, 64, 32, 16, 72, 164, 240, 240, 160, 64, 32, 160, 408, 680, 800, 672, 384, 128, 64, 352, 992, 1848, 2480, 2464, 1792, 896, 256, 128, 768, 2368, 4864, 7296, 8288, 7168, 4608, 2048, 512, 256, 1664, 5568]

cp's OEIS Frontend

A181293 Triangle read by rows: T(n,k) is the number of 2-compositions of n having k 0's (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