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.

A125170 Binomial transform of an infinite lower triangular matrix with (1,1,2,4,8,...) in every column and the rest zeros. Let the left column = A007051, then for k > 1, T(n,k) = (n-1,k) + (n-1,k-1).

Table of values

n a(n)
0 1
1 2
2 1
3 5
4 3
5 1
6 14
7 8
8 4
9 1
10 41
11 22
12 12
13 5
14 1
15 122
16 63
17 34
18 17
19 6
20 1
21 365
22 185
23 97
24 51
25 23
26 7
27 1
28 1094
29 550
30 282
31 148
32 74
33 30
34 8
35 1
36 3281
37 1644
38 832
39 430
40 222
41 104
42 38
43 9
44 1

List of values

[1, 2, 1, 5, 3, 1, 14, 8, 4, 1, 41, 22, 12, 5, 1, 122, 63, 34, 17, 6, 1, 365, 185, 97, 51, 23, 7, 1, 1094, 550, 282, 148, 74, 30, 8, 1, 3281, 1644, 832, 430, 222, 104, 38, 9, 1]