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.

A173108 Triangle, A000110 in every column > 0, shifted down twice.

Table of values

n a(n)
0 1
1 1
2 2
3 1
4 5
5 1
6 15
7 2
8 1
9 52
10 5
11 1
12 203
13 15
14 2
15 1
16 877
17 52
18 5
19 1
20 4140
21 203
22 15
23 2
24 1
25 21147
26 877
27 52
28 5
29 1
30 115975
31 4140
32 203
33 15
34 2
35 1
36 678570
37 21147
38 877
39 52
40 5
41 1
42 4213597
43 115975
44 4140
45 203
46 15
47 2
48 1
49 27644437
50 678570
51 21147
52 877
53 52
54 5
55 1

List of values

[1, 1, 2, 1, 5, 1, 15, 2, 1, 52, 5, 1, 203, 15, 2, 1, 877, 52, 5, 1, 4140, 203, 15, 2, 1, 21147, 877, 52, 5, 1, 115975, 4140, 203, 15, 2, 1, 678570, 21147, 877, 52, 5, 1, 4213597, 115975, 4140, 203, 15, 2, 1, 27644437, 678570, 21147, 877, 52, 5, 1]