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.

A066067 Number of binary strings u of any length with property that length(u) + number of 0's in u <= n (only one of a string and its reversal are counted).

Table of values

n a(n)
1 1
2 2
3 3
4 6
5 10
6 18
7 29
8 49
9 78
10 128
11 203
12 329
13 523
14 844
15 1347
16 2172
17 3480
18 5614
19 9023
20 14567
21 23466
22 37910
23 61165
24 98865
25 159677
26 258190
27 417283
28 674890
29 1091214
30 1765146
31 2854793
32 4618373
33 7470614
34 12086436
35 19552903
36 31635193
37 51181367
38 82809832

List of values

[1, 2, 3, 6, 10, 18, 29, 49, 78, 128, 203, 329, 523, 844, 1347, 2172, 3480, 5614, 9023, 14567, 23466, 37910, 61165, 98865, 159677, 258190, 417283, 674890, 1091214, 1765146, 2854793, 4618373, 7470614, 12086436, 19552903, 31635193, 51181367, 82809832]