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.

A164414 Number of binary strings of length n with no substrings equal to 0000, 0001, or 1010.

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 13
5 22
6 37
7 63
8 107
9 181
10 307
11 521
12 883
13 1497
14 2539
15 4305
16 7299
17 12377
18 20987
19 35585
20 60339
21 102313
22 173483
23 294161
24 498787
25 845753
26 1434075
27 2431649
28 4123155
29 6991305
30 11854603
31 20100913
32 34083523
33 57792729
34 97994555
35 166161601
36 281747059

List of values

[1, 2, 4, 8, 13, 22, 37, 63, 107, 181, 307, 521, 883, 1497, 2539, 4305, 7299, 12377, 20987, 35585, 60339, 102313, 173483, 294161, 498787, 845753, 1434075, 2431649, 4123155, 6991305, 11854603, 20100913, 34083523, 57792729, 97994555, 166161601, 281747059]