A218796 - cp's OEIS frontend

A218796 Triangular array read by rows: T(n,k) is the number of compositions of n that have exactly k 3's; n>=0, 0<=k<=floor(n/3).

n	a(n)
0	1
1	1
2	2
3	3
4	1
5	6
6	2
7	11
8	5
9	21
10	10
11	1
12	39
13	22
14	3
15	73
16	46
17	9
18	136
19	97
20	22
21	1
22	254
23	200
24	54
25	4
26	474
27	410
28	126
29	14
30	885
31	832
32	290
33	40
34	1
35	1652
36	1679
37	651
38	109
39	5
40	3084
41	3368
42	1440
43	280
44	20
45	5757
46	6725
47	3138
48	698
49	65
50	1
51	10747
52	13370
53	6762
54	1688
55	195
56	6
57	20062
58	26483
59	14424
60	3994
61	546
62	27

[1, 1, 2, 3, 1, 6, 2, 11, 5, 21, 10, 1, 39, 22, 3, 73, 46, 9, 136, 97, 22, 1, 254, 200, 54, 4, 474, 410, 126, 14, 885, 832, 290, 40, 1, 1652, 1679, 651, 109, 5, 3084, 3368, 1440, 280, 20, 5757, 6725, 3138, 698, 65, 1, 10747, 13370, 6762, 1688, 195, 6, 20062, 26483, 14424, 3994, 546, 27]

cp's OEIS Frontend

A218796 Triangular array read by rows: T(n,k) is the number of compositions of n that have exactly k 3's; n>=0, 0<=k<=floor(n/3).

Table of values

List of values