A106580 - cp's OEIS frontend

A106580 Triangle T(n, k) = T(n, k-1) + Sum_{i >= 1} T(n-2i, k-i) with T(n,0)=1, read by rows.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	1
7	2
8	3
9	3
10	1
11	2
12	5
13	7
14	7
15	1
16	2
17	5
18	9
19	12
20	12
21	1
22	2
23	5
24	13
25	22
26	29
27	29
28	1
29	2
30	5
31	13
32	26
33	41
34	53
35	53
36	1
37	2
38	5
39	13
40	34
41	65
42	101
43	130
44	130
45	1
46	2
47	5
48	13
49	34
50	73
51	129
52	194
53	247
54	247
55	1
56	2
57	5
58	13
59	34
60	89
61	185
62	322
63	481
64	611
65	611
66	1
67	2
68	5
69	13
70	34
71	89
72	201
73	386
74	645
75	945
76	1192
77	1192
78	1
79	2
80	5
81	13
82	34
83	89
84	233
85	514
86	973
87	1613
88	2354
89	2965
90	2965

[1, 1, 1, 1, 2, 2, 1, 2, 3, 3, 1, 2, 5, 7, 7, 1, 2, 5, 9, 12, 12, 1, 2, 5, 13, 22, 29, 29, 1, 2, 5, 13, 26, 41, 53, 53, 1, 2, 5, 13, 34, 65, 101, 130, 130, 1, 2, 5, 13, 34, 73, 129, 194, 247, 247, 1, 2, 5, 13, 34, 89, 185, 322, 481, 611, 611, 1, 2, 5, 13, 34, 89, 201, 386, 645, 945, 1192, 1192, 1, 2, 5, 13, 34, 89, 233, 514, 973, 1613, 2354, 2965, 2965]

cp's OEIS Frontend

A106580 Triangle T(n, k) = T(n, k-1) + Sum_{i >= 1} T(n-2i, k-i) with T(n,0)=1, read by rows.

Table of values

List of values