cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A045677 Number of 2n-bead balanced binary necklaces which are equivalent to their complement, but not equivalent to their reverse and their reversed complement.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 0
5 0
6 2
7 2
8 8
9 14
10 36
11 62
12 142
13 252
14 524
15 968
16 1928
17 3600
18 7044
19 13286
20 25740
21 48916
22 94364
23 180314
24 347630
25 666996
26 1286712
27 2477342
28 4785824
29 9240012
30 17880320
31 34604066
32 67078024
33 130085052
34 252583200
35 490722344
36 954313264

List of values

[0, 0, 0, 0, 0, 0, 2, 2, 8, 14, 36, 62, 142, 252, 524, 968, 1928, 3600, 7044, 13286, 25740, 48916, 94364, 180314, 347630, 666996, 1286712, 2477342, 4785824, 9240012, 17880320, 34604066, 67078024, 130085052, 252583200, 490722344, 954313264]