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.

A241903 Number of binary strings of length n avoiding the pattern x x x^R (where x^R means reverse of x).

Table of values

n a(n)
0 1
1 2
2 4
3 6
4 10
5 16
6 24
7 34
8 48
9 62
10 80
11 100
12 124
13 148
14 178
15 210
16 244
17 282
18 324
19 372
20 426
21 488
22 556
23 630
24 712
25 804
26 908
27 1024
28 1152
29 1296
30 1454
31 1626
32 1814
33 2018
34 2244
35 2490
36 2756
37 3044
38 3354
39 3690
40 4050
41 4438
42 4856
43 5300
44 5772
45 6272
46 6800
47 7370
48 7966
49 8598
50 9266
51 9964
52 10708
53 11484
54 12300
55 13166

List of values

[1, 2, 4, 6, 10, 16, 24, 34, 48, 62, 80, 100, 124, 148, 178, 210, 244, 282, 324, 372, 426, 488, 556, 630, 712, 804, 908, 1024, 1152, 1296, 1454, 1626, 1814, 2018, 2244, 2490, 2756, 3044, 3354, 3690, 4050, 4438, 4856, 5300, 5772, 6272, 6800, 7370, 7966, 8598, 9266, 9964, 10708, 11484, 12300, 13166]