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.

A110710 Number of ternary necklaces with n beads of each color and no adjacent beads of the same color (i.e., no substrings 00, 11, 22).

Table of values

n a(n)
0 1
1 2
2 5
3 16
4 70
5 348
6 1948
7 11444
8 70380
9 445944
10 2896590
11 19186740
12 129186596
13 881808728
14 6089851874
15 42482906040
16 298976142764
17 2120377458900
18 15141289233972
19 108784152585236
20 785869931659980
21 5705406374249272

List of values

[1, 2, 5, 16, 70, 348, 1948, 11444, 70380, 445944, 2896590, 19186740, 129186596, 881808728, 6089851874, 42482906040, 298976142764, 2120377458900, 15141289233972, 108784152585236, 785869931659980, 5705406374249272]

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

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