A228526 - cp's OEIS frontend

A228526 Triangle read by rows: T(n,k) = sum of all parts of size k in all compositions (ordered partitions) of n.

n	a(n)
1	1
2	2
3	2
4	5
5	4
6	3
7	12
8	10
9	6
10	4
11	28
12	24
13	15
14	8
15	5
16	64
17	56
18	36
19	20
20	10
21	6
22	144
23	128
24	84
25	48
26	25
27	12
28	7
29	320
30	288
31	192
32	112
33	60
34	30
35	14
36	8
37	704
38	640
39	432
40	256
41	140
42	72
43	35
44	16
45	9
46	1536
47	1408
48	960
49	576
50	320
51	168
52	84
53	40
54	18
55	10
56	3328
57	3072
58	2112
59	1280
60	720

[1, 2, 2, 5, 4, 3, 12, 10, 6, 4, 28, 24, 15, 8, 5, 64, 56, 36, 20, 10, 6, 144, 128, 84, 48, 25, 12, 7, 320, 288, 192, 112, 60, 30, 14, 8, 704, 640, 432, 256, 140, 72, 35, 16, 9, 1536, 1408, 960, 576, 320, 168, 84, 40, 18, 10, 3328, 3072, 2112, 1280, 720]

cp's OEIS Frontend

A228526 Triangle read by rows: T(n,k) = sum of all parts of size k in all compositions (ordered partitions) of n.

Table of values

List of values