A276544 - cp's OEIS frontend

A276544 Triangle read by rows: T(n,k) = number of primitive (aperiodic) reversible string structures with n beads using exactly k different colors.

n	a(n)
1	1
2	0
3	1
4	0
5	2
6	1
7	0
8	4
9	4
10	1
11	0
12	9
13	15
14	6
15	1
16	0
17	16
18	49
19	37
20	9
21	1
22	0
23	35
24	160
25	183
26	76
27	12
28	1
29	0
30	66
31	498
32	876
33	542
34	142
35	16
36	1
37	0
38	133
39	1544
40	3930
41	3523
42	1346
43	242
44	20
45	1
46	0
47	261
48	4715
49	17179
50	21392
51	11511
52	2980
53	390
54	25
55	1

[1, 0, 1, 0, 2, 1, 0, 4, 4, 1, 0, 9, 15, 6, 1, 0, 16, 49, 37, 9, 1, 0, 35, 160, 183, 76, 12, 1, 0, 66, 498, 876, 542, 142, 16, 1, 0, 133, 1544, 3930, 3523, 1346, 242, 20, 1, 0, 261, 4715, 17179, 21392, 11511, 2980, 390, 25, 1]

cp's OEIS Frontend

A276544 Triangle read by rows: T(n,k) = number of primitive (aperiodic) reversible string structures with n beads using exactly k different colors.

Table of values

List of values