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.

A208719 Number of n-bead necklaces labeled with numbers 1..6 allowing reversal, with no adjacent beads differing by more than 1.

Table of values

n a(n)
1 6
2 11
3 16
4 30
5 48
6 100
7 182
8 404
9 850
10 1996
11 4614
12 11391
13 28002
14 71236
15 181710
16 471437
17 1227712
18 3226816
19 8509930
20 22564205
21 60002088
22 160113626
23 428273964
24 1148410792
25 3085474406
26 8305718893
27 22394409228
28 60474491712
29 163531569910
30 442782412569

List of values

[6, 11, 16, 30, 48, 100, 182, 404, 850, 1996, 4614, 11391, 28002, 71236, 181710, 471437, 1227712, 3226816, 8509930, 22564205, 60002088, 160113626, 428273964, 1148410792, 3085474406, 8305718893, 22394409228, 60474491712, 163531569910, 442782412569]

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

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