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.

A292219 Triangle read by rows. A generalization of unsigned Lah numbers, called L[4,3].

Table of values

n a(n)
0 1
1 6
2 1
3 60
4 20
5 1
6 840
7 420
8 42
9 1
10 15120
11 10080
12 1512
13 72
14 1
15 332640
16 277200
17 55440
18 3960
19 110
20 1
21 8648640
22 8648640
23 2162160
24 205920
25 8580
26 156
27 1
28 259459200
29 302702400
30 90810720
31 10810800
32 600600
33 16380
34 210
35 1
36 8821612800
37 11762150400
38 4116752640
39 588107520
40 40840800
41 1485120
42 28560
43 272
44 1

List of values

[1, 6, 1, 60, 20, 1, 840, 420, 42, 1, 15120, 10080, 1512, 72, 1, 332640, 277200, 55440, 3960, 110, 1, 8648640, 8648640, 2162160, 205920, 8580, 156, 1, 259459200, 302702400, 90810720, 10810800, 600600, 16380, 210, 1, 8821612800, 11762150400, 4116752640, 588107520, 40840800, 1485120, 28560, 272, 1]