A120910 - cp's OEIS frontend

A120910 Triangle read by rows: T(n,k) is the number of ternary words of length n having k levels (n >= 1, 0 <= k <= n-1). A level is a pair of identical consecutive letters.

n	a(n)
1	3
2	6
3	3
4	12
5	12
6	3
7	24
8	36
9	18
10	3
11	48
12	96
13	72
14	24
15	3
16	96
17	240
18	240
19	120
20	30
21	3
22	192
23	576
24	720
25	480
26	180
27	36
28	3
29	384
30	1344
31	2016
32	1680
33	840
34	252
35	42
36	3
37	768
38	3072
39	5376
40	5376
41	3360
42	1344
43	336
44	48
45	3
46	1536
47	6912
48	13824
49	16128
50	12096
51	6048
52	2016
53	432
54	54
55	3
56	3072

[3, 6, 3, 12, 12, 3, 24, 36, 18, 3, 48, 96, 72, 24, 3, 96, 240, 240, 120, 30, 3, 192, 576, 720, 480, 180, 36, 3, 384, 1344, 2016, 1680, 840, 252, 42, 3, 768, 3072, 5376, 5376, 3360, 1344, 336, 48, 3, 1536, 6912, 13824, 16128, 12096, 6048, 2016, 432, 54, 3, 3072]

cp's OEIS Frontend

A120910 Triangle read by rows: T(n,k) is the number of ternary words of length n having k levels (n >= 1, 0 <= k <= n-1). A level is a pair of identical consecutive letters.

Table of values

List of values