A106597 - cp's OEIS frontend

A106597 Triangle T(n,k) = T(n-1, k-1) + T(n-1, k) + Sum_{i >= 1} T(n-2*i, k-i), with T(n, 0) = T(n, n) = 1, read by rows.

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	1
7	5
8	5
9	1
10	1
11	7
12	14
13	7
14	1
15	1
16	9
17	27
18	27
19	9
20	1
21	1
22	11
23	44
24	72
25	44
26	11
27	1
28	1
29	13
30	65
31	149
32	149
33	65
34	13
35	1
36	1
37	15
38	90
39	266
40	388
41	266
42	90
43	15
44	1
45	1
46	17
47	119
48	431
49	836
50	836
51	431
52	119
53	17
54	1
55	1
56	19
57	152
58	652
59	1585
60	2150
61	1585
62	652
63	152
64	19
65	1
66	1
67	21
68	189
69	937
70	2743
71	4753
72	4753
73	2743
74	937
75	189
76	21
77	1

[1, 1, 1, 1, 3, 1, 1, 5, 5, 1, 1, 7, 14, 7, 1, 1, 9, 27, 27, 9, 1, 1, 11, 44, 72, 44, 11, 1, 1, 13, 65, 149, 149, 65, 13, 1, 1, 15, 90, 266, 388, 266, 90, 15, 1, 1, 17, 119, 431, 836, 836, 431, 119, 17, 1, 1, 19, 152, 652, 1585, 2150, 1585, 652, 152, 19, 1, 1, 21, 189, 937, 2743, 4753, 4753, 2743, 937, 189, 21, 1]

cp's OEIS Frontend

A106597 Triangle T(n,k) = T(n-1, k-1) + T(n-1, k) + Sum_{i >= 1} T(n-2*i, k-i), with T(n, 0) = T(n, n) = 1, read by rows.

Table of values

List of values