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.

A164415 Number of binary strings of length n with no substrings equal to 0000, 0001, or 1100.

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 13
5 22
6 38
7 65
8 112
9 193
10 332
11 572
12 985
13 1696
14 2921
15 5030
16 8662
17 14917
18 25688
19 44237
20 76180
21 131188
22 225917
23 389048
24 669973
25 1153750
26 1986854
27 3421529
28 5892160
29 10146793
30 17473628
31 30091052
32 51819313
33 89237200
34 153673937
35 264639398
36 455731222

List of values

[1, 2, 4, 8, 13, 22, 38, 65, 112, 193, 332, 572, 985, 1696, 2921, 5030, 8662, 14917, 25688, 44237, 76180, 131188, 225917, 389048, 669973, 1153750, 1986854, 3421529, 5892160, 10146793, 17473628, 30091052, 51819313, 89237200, 153673937, 264639398, 455731222]

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

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