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.

A066314 Number of identity (asymmetric) bracelets (or necklaces) with n red or blue beads such that the beads switch colors when bracelet is turned over.

Table of values

n a(n)
1 1
2 0
3 1
4 1
5 3
6 3
7 9
8 12
9 28
10 42
11 93
12 154
13 315
14 549
15 1091
16 1980
17 3855
18 7140
19 13797
20 25941
21 49929
22 94767
23 182361
24 348430
25 671088
26 1288350
27 2485504
28 4789134
29 9256395
30 17886951
31 34636833
32 67091520
33 130150493
34 252610440
35 490853403

List of values

[1, 0, 1, 1, 3, 3, 9, 12, 28, 42, 93, 154, 315, 549, 1091, 1980, 3855, 7140, 13797, 25941, 49929, 94767, 182361, 348430, 671088, 1288350, 2485504, 4789134, 9256395, 17886951, 34636833, 67091520, 130150493, 252610440, 490853403]