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.

A007040 Number of (marked) cyclic n-bit binary strings containing no runs of length > 2.

Table of values

n a(n)
1 2
2 2
3 6
4 6
5 10
6 20
7 28
8 46
9 78
10 122
11 198
12 324
13 520
14 842
15 1366
16 2206
17 3570
18 5780
19 9348
20 15126
21 24478
22 39602
23 64078
24 103684
25 167760
26 271442
27 439206
28 710646
29 1149850
30 1860500
31 3010348
32 4870846
33 7881198
34 12752042
35 20633238
36 33385284
37 54018520

List of values

[2, 2, 6, 6, 10, 20, 28, 46, 78, 122, 198, 324, 520, 842, 1366, 2206, 3570, 5780, 9348, 15126, 24478, 39602, 64078, 103684, 167760, 271442, 439206, 710646, 1149850, 1860500, 3010348, 4870846, 7881198, 12752042, 20633238, 33385284, 54018520]

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

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