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.

A209029 Number of n-bead necklaces labeled with numbers -5..5 allowing reversal, with sum zero and first differences in -5..5.

Table of values

n a(n)
1 1
2 3
3 7
4 38
5 187
6 1237
7 8235
8 58524
9 422504
10 3117158
11 23290361
12 176103500
13 1344136056
14 10344670554
15 80181862705
16 625395356182
17 4904914026691
18 38658468142298
19 306034794302017
20 2432316965565820
21 19401236375176220
22 155259190622702818

List of values

[1, 3, 7, 38, 187, 1237, 8235, 58524, 422504, 3117158, 23290361, 176103500, 1344136056, 10344670554, 80181862705, 625395356182, 4904914026691, 38658468142298, 306034794302017, 2432316965565820, 19401236375176220, 155259190622702818]

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

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