A045687 - cp's OEIS frontend

A045687 Number of 2n-bead balanced binary necklaces of fundamental period 2n which are equivalent to their reversed complement, but are not equivalent to their reverse and complement.

n	a(n)
0	0
1	0
2	0
3	2
4	4
5	12
6	24
7	56
8	112
9	238
10	480
11	992
12	1980
13	4032
14	8064
15	16242
16	32512
17	65280
18	130536
19	261632
20	523260
21	1047494
22	2095104
23	4192256
24	8384400
25	16773108
26	33546240
27	67100432
28	134201340
29	268419072
30	536837640
31	1073709056
32	2147418112

[0, 0, 0, 2, 4, 12, 24, 56, 112, 238, 480, 992, 1980, 4032, 8064, 16242, 32512, 65280, 130536, 261632, 523260, 1047494, 2095104, 4192256, 8384400, 16773108, 33546240, 67100432, 134201340, 268419072, 536837640, 1073709056, 2147418112]

cp's OEIS Frontend

A045687 Number of 2n-bead balanced binary necklaces of fundamental period 2n which are equivalent to their reversed complement, but are not equivalent to their reverse and complement.

Table of values

List of values