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.

A351361 Number of binary necklaces with n beads and at least four consecutive black beads.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 2
6 3
7 5
8 9
9 17
10 33
11 63
12 124
13 241
14 475
15 930
16 1831
17 3593
18 7077
19 13905
20 27377
21 53847
22 106006
23 208601
24 410723
25 808514
26 1592123
27 3135085
28 6174695
29 12161761
30 23957945
31 47198847
32 92997768
33 183253045
34 361145269
35 711793554
36 1403055509
37 2765913617

List of values

[0, 0, 0, 1, 2, 3, 5, 9, 17, 33, 63, 124, 241, 475, 930, 1831, 3593, 7077, 13905, 27377, 53847, 106006, 208601, 410723, 808514, 1592123, 3135085, 6174695, 12161761, 23957945, 47198847, 92997768, 183253045, 361145269, 711793554, 1403055509, 2765913617]

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

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