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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.

A136657 Unsigned member s=2 of a family of generalizations of the (signed) Lah triangle A008297. All numbers divided by 2.

Table of values

n a(n)
0 1
1 3
2 2
3 12
4 18
5 4
6 60
7 150
8 72
9 8
10 360
11 1320
12 1020
13 240
14 16
15 2520
16 12600
17 13860
18 5160
19 720
20 32
21 20160
22 131040
23 191520
24 99960
25 21840
26 2016
27 64
28 181440
29 1481760
30 2751840
31 1882440
32 571200
33 81984
34 5376
35 128
36 1814400
37 18144000
38 41489280
39 35622720

List of values

[1, 3, 2, 12, 18, 4, 60, 150, 72, 8, 360, 1320, 1020, 240, 16, 2520, 12600, 13860, 5160, 720, 32, 20160, 131040, 191520, 99960, 21840, 2016, 64, 181440, 1481760, 2751840, 1882440, 571200, 81984, 5376, 128, 1814400, 18144000, 41489280, 35622720]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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