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.

A119440 Triangle read by rows: T(n,k) is the number of binary sequences of length n that start with exactly k 01's (0 <= k <= floor(n/2)).

Table of values

n a(n)
0 1
1 2
2 3
3 1
4 6
5 2
6 12
7 3
8 1
9 24
10 6
11 2
12 48
13 12
14 3
15 1
16 96
17 24
18 6
19 2
20 192
21 48
22 12
23 3
24 1
25 384
26 96
27 24
28 6
29 2
30 768
31 192
32 48
33 12
34 3
35 1
36 1536
37 384
38 96
39 24
40 6
41 2
42 3072
43 768
44 192
45 48
46 12
47 3
48 1
49 6144
50 1536
51 384
52 96
53 24
54 6
55 2
56 12288
57 3072
58 768
59 192
60 48
61 12
62 3
63 1
64 24576
65 6144
66 1536
67 384
68 96

List of values

[1, 2, 3, 1, 6, 2, 12, 3, 1, 24, 6, 2, 48, 12, 3, 1, 96, 24, 6, 2, 192, 48, 12, 3, 1, 384, 96, 24, 6, 2, 768, 192, 48, 12, 3, 1, 1536, 384, 96, 24, 6, 2, 3072, 768, 192, 48, 12, 3, 1, 6144, 1536, 384, 96, 24, 6, 2, 12288, 3072, 768, 192, 48, 12, 3, 1, 24576, 6144, 1536, 384, 96]