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.

A366045 Number of circular binary sequences of length n with an odd number of 0's and no three consecutive 1's.

Table of values

n a(n)
1 1
2 2
3 4
4 4
5 11
6 20
7 36
8 64
9 121
10 222
11 408
12 748
13 1379
14 2536
15 4664
16 8576
17 15777
18 29018
19 53372
20 98164
21 180555
22 332092
23 610812
24 1123456
25 2066361
26 3800630
27 6990448
28 12857436
29 23648515
30 43496400
31 80002352
32 147147264
33 270646017
34 497795634
35 915588916
36 1684030564

List of values

[1, 2, 4, 4, 11, 20, 36, 64, 121, 222, 408, 748, 1379, 2536, 4664, 8576, 15777, 29018, 53372, 98164, 180555, 332092, 610812, 1123456, 2066361, 3800630, 6990448, 12857436, 23648515, 43496400, 80002352, 147147264, 270646017, 497795634, 915588916, 1684030564]

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

Content is available under The OEIS End-User License Agreement.