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.

A173111 Triangle read by rows, A173108 * the diagonalized variant of A173110.

Table of values

n a(n)
0 1
1 1
2 2
3 1
4 5
5 1
6 15
7 2
8 3
9 52
10 5
11 3
12 203
13 15
14 6
15 6
16 877
17 52
18 15
19 6
20 4140
21 203
22 45
23 12
24 20
25 21147
26 877
27 156
28 30
29 20
30 115975
31 4140
32 609
33 90
34 40
35 60
36 678570
37 21147
38 2631
39 312
40 100
41 60

List of values

[1, 1, 2, 1, 5, 1, 15, 2, 3, 52, 5, 3, 203, 15, 6, 6, 877, 52, 15, 6, 4140, 203, 45, 12, 20, 21147, 877, 156, 30, 20, 115975, 4140, 609, 90, 40, 60, 678570, 21147, 2631, 312, 100, 60]