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.

A164161 Number of binary strings of length n with equal numbers of 0001 and 1000 substrings.

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 14
5 26
6 50
7 100
8 200
9 400
10 800
11 1600
12 3200
13 6400
14 12800
15 25600
16 51200
17 102400
18 204800
19 409600
20 819200
21 1638400
22 3276800
23 6553600
24 13107200
25 26214400
26 52428800
27 104857600
28 209715200
29 419430400
30 838860800
31 1677721600
32 3355443200

List of values

[1, 2, 4, 8, 14, 26, 50, 100, 200, 400, 800, 1600, 3200, 6400, 12800, 25600, 51200, 102400, 204800, 409600, 819200, 1638400, 3276800, 6553600, 13107200, 26214400, 52428800, 104857600, 209715200, 419430400, 838860800, 1677721600, 3355443200]

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

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