A120987 - cp's OEIS frontend

A120987 Triangle read by rows: T(n,k) is the number of ternary words of length n with k strictly increasing runs (0 <= k <= n; for example, the ternary word 2|01|12|02|1|1|012|2 has 8 strictly increasing runs).

n	a(n)
0	1
1	0
2	3
3	0
4	3
5	6
6	0
7	1
8	16
9	10
10	0
11	0
12	15
13	51
14	15
15	0
16	0
17	6
18	90
19	126
20	21
21	0
22	0
23	1
24	77
25	357
26	266
27	28
28	0
29	0
30	0
31	36
32	504
33	1107
34	504
35	36
36	0
37	0
38	0
39	9
40	414
41	2304
42	2907
43	882
44	45
45	0
46	0
47	0
48	1
49	210
50	2850
51	8350
52	6765
53	1452
54	55
55	0
56	0
57	0
58	0
59	66
60	2277
61	14355
62	25653
63	14355
64	2277
65	66
66	0
67	0
68	0
69	0
70	12

[1, 0, 3, 0, 3, 6, 0, 1, 16, 10, 0, 0, 15, 51, 15, 0, 0, 6, 90, 126, 21, 0, 0, 1, 77, 357, 266, 28, 0, 0, 0, 36, 504, 1107, 504, 36, 0, 0, 0, 9, 414, 2304, 2907, 882, 45, 0, 0, 0, 1, 210, 2850, 8350, 6765, 1452, 55, 0, 0, 0, 0, 66, 2277, 14355, 25653, 14355, 2277, 66, 0, 0, 0, 0, 12]

cp's OEIS Frontend

A120987 Triangle read by rows: T(n,k) is the number of ternary words of length n with k strictly increasing runs (0 <= k <= n; for example, the ternary word 2|01|12|02|1|1|012|2 has 8 strictly increasing runs).

Table of values

List of values