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.

A208718 Number of n-bead necklaces labeled with numbers 1..5 allowing reversal, with no adjacent beads differing by more than 1.

Table of values

n a(n)
1 5
2 9
3 13
4 24
5 38
6 78
7 140
8 306
9 634
10 1464
11 3326
12 8066
13 19454
14 48534
15 121294
16 308154
17 785222
18 2018548
19 5203634
20 13482426
21 35019010
22 91251438
23 238278314
24 623629333
25 1635062126
26 4294493670
27 11296419934
28 29757590061
29 78489973742
30 207281830814

List of values

[5, 9, 13, 24, 38, 78, 140, 306, 634, 1464, 3326, 8066, 19454, 48534, 121294, 308154, 785222, 2018548, 5203634, 13482426, 35019010, 91251438, 238278314, 623629333, 1635062126, 4294493670, 11296419934, 29757590061, 78489973742, 207281830814]

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

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