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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.

A335247 a(n) is the number of binary (0,1) sequences of length n that have at least two ones in each window of eight consecutive symbols.

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 16
5 32
6 64
7 127
8 247
9 487
10 961
11 1897
12 3745
13 7393
14 14593
15 28801
16 56833
17 112156
18 221341
19 436825
20 862094
21 1701380
22 3357739
23 6626611
24 13077820
25 25809478
26 50935832
27 100523529
28 198386490
29 391522260
30 772682018
31 1524913233
32 3009466064
33 5939279536
34 11721362180

List of values

[1, 2, 4, 8, 16, 32, 64, 127, 247, 487, 961, 1897, 3745, 7393, 14593, 28801, 56833, 112156, 221341, 436825, 862094, 1701380, 3357739, 6626611, 13077820, 25809478, 50935832, 100523529, 198386490, 391522260, 772682018, 1524913233, 3009466064, 5939279536, 11721362180]

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

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