A115114 - cp's OEIS frontend

A115114 Asymmetric rhythm cycles (patterns): binary necklaces of length 2n subject to the restriction that for any k if the k-th bead is of color 1 then the (k+n)-th bead (modulo 2n) is of color 0.

n	a(n)
1	2
2	3
3	6
4	11
5	26
6	63
7	158
8	411
9	1098
10	2955
11	8054
12	22151
13	61322
14	170823
15	478318
16	1345211
17	3798242
18	10761723
19	30585830
20	87169619
21	249056138
22	713205903
23	2046590846
24	5883948951
25	16945772210
26	48882035163
27	141214768974

[2, 3, 6, 11, 26, 63, 158, 411, 1098, 2955, 8054, 22151, 61322, 170823, 478318, 1345211, 3798242, 10761723, 30585830, 87169619, 249056138, 713205903, 2046590846, 5883948951, 16945772210, 48882035163, 141214768974]

cp's OEIS Frontend

A115114 Asymmetric rhythm cycles (patterns): binary necklaces of length 2n subject to the restriction that for any k if the k-th bead is of color 1 then the (k+n)-th bead (modulo 2n) is of color 0.

Table of values

List of values