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.

A007148 Number of self-complementary 2-colored bracelets (turnover necklaces) with 2n beads.

Table of values

n a(n)
1 1
2 2
3 3
4 6
5 10
6 20
7 37
8 74
9 143
10 284
11 559
12 1114
13 2206
14 4394
15 8740
16 17418
17 34696
18 69194
19 137971
20 275280
21 549258
22 1096286
23 2188333
24 4369162
25 8724154
26 17422652
27 34797199
28 69505908
29 138845926
30 277383872
31 554189329
32 1107297290
33 2212558942

List of values

[1, 2, 3, 6, 10, 20, 37, 74, 143, 284, 559, 1114, 2206, 4394, 8740, 17418, 34696, 69194, 137971, 275280, 549258, 1096286, 2188333, 4369162, 8724154, 17422652, 34797199, 69505908, 138845926, 277383872, 554189329, 1107297290, 2212558942]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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