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.

A118869 Triangle read by rows: T(n,k) is the number of binary sequences of length n containing k subsequences 0101 (n,k>=0).

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 15
5 1
6 28
7 4
8 53
9 10
10 1
11 100
12 24
13 4
14 188
15 57
16 10
17 1
18 354
19 128
20 26
21 4
22 667
23 278
24 68
25 10
26 1
27 1256
28 596
29 164
30 28
31 4
32 2365
33 1260
34 381
35 79
36 10
37 1
38 4454
39 2628
40 876
41 200
42 30
43 4
44 8388
45 5430
46 1977
47 488
48 90
49 10
50 1
51 15796
52 11136
53 4380
54 1184
55 236
56 32
57 4
58 29747
59 22683

List of values

[1, 2, 4, 8, 15, 1, 28, 4, 53, 10, 1, 100, 24, 4, 188, 57, 10, 1, 354, 128, 26, 4, 667, 278, 68, 10, 1, 1256, 596, 164, 28, 4, 2365, 1260, 381, 79, 10, 1, 4454, 2628, 876, 200, 30, 4, 8388, 5430, 1977, 488, 90, 10, 1, 15796, 11136, 4380, 1184, 236, 32, 4, 29747, 22683]