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.

A111578 Triangle T(n, m) = T(n-1, m-1) + (4m-3)*T(n-1, m) read by rows 1<=m<=n.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 6
6 1
7 1
8 31
9 15
10 1
11 1
12 156
13 166
14 28
15 1
16 1
17 781
18 1650
19 530
20 45
21 1
22 1
23 3906
24 15631
25 8540
26 1295
27 66
28 1
29 1
30 19531
31 144585
32 126651
33 30555
34 2681
35 91
36 1
37 1
38 97656
39 1320796
40 1791048
41 646086
42 86856
43 4956
44 120
45 1
46 1
47 488281
48 11984820
49 24604420
50 12774510

List of values

[1, 1, 1, 1, 6, 1, 1, 31, 15, 1, 1, 156, 166, 28, 1, 1, 781, 1650, 530, 45, 1, 1, 3906, 15631, 8540, 1295, 66, 1, 1, 19531, 144585, 126651, 30555, 2681, 91, 1, 1, 97656, 1320796, 1791048, 646086, 86856, 4956, 120, 1, 1, 488281, 11984820, 24604420, 12774510]