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.

A209024 Number of n-bead necklaces labeled with numbers -n..n allowing reversal, with sum zero and first differences in -n..n.

Table of values

n a(n)
1 1
2 2
3 4
4 23
5 187
6 2798
7 52208
8 1210780
9 32915700
10 1029158718
11 36366029268
12 1434017630862
13 62448855324545
14 2977529703278272
15 154305670613042906
16 8637641797383212010
17 519466811614545786362
18 33406493488132547194879
19 2287819864082225737308655
20 166242770253180661727941435

List of values

[1, 2, 4, 23, 187, 2798, 52208, 1210780, 32915700, 1029158718, 36366029268, 1434017630862, 62448855324545, 2977529703278272, 154305670613042906, 8637641797383212010, 519466811614545786362, 33406493488132547194879, 2287819864082225737308655, 166242770253180661727941435]

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

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