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.

A062993 A triangle (lower triangular matrix) composed of Pfaff-Fuss (or Raney) sequences.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 1
5 1
6 5
7 3
8 1
9 1
10 14
11 12
12 4
13 1
14 1
15 42
16 55
17 22
18 5
19 1
20 1
21 132
22 273
23 140
24 35
25 6
26 1
27 1
28 429
29 1428
30 969
31 285
32 51
33 7
34 1
35 1
36 1430
37 7752
38 7084
39 2530
40 506
41 70
42 8
43 1
44 1
45 4862
46 43263
47 53820
48 23751
49 5481
50 819
51 92
52 9

List of values

[1, 1, 1, 2, 1, 1, 5, 3, 1, 1, 14, 12, 4, 1, 1, 42, 55, 22, 5, 1, 1, 132, 273, 140, 35, 6, 1, 1, 429, 1428, 969, 285, 51, 7, 1, 1, 1430, 7752, 7084, 2530, 506, 70, 8, 1, 1, 4862, 43263, 53820, 23751, 5481, 819, 92, 9]