Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | 18 |
3 | 168 |
4 | 1170 |
5 | 7440 |
6 | 45738 |
7 | 277368 |
8 | 1672290 |
9 | 10056480 |
10 | 60404058 |
11 | 362613768 |
12 | 2176238610 |
13 | 13059075120 |
14 | 78359331978 |
15 | 470170537368 |
16 | 2821066664130 |
17 | 16926529911360 |
18 | 101559568461498 |
19 | 609358576176168 |
20 | 3656154950132850 |
21 | 21936940173733200 |
22 | 131621672448624618 |
23 | 789730128885258168 |
[0,18,168,1170,7440,45738,277368,1672290,10056480, 60404058,362613768,2176238610,13059075120, 78359331978,470170537368,2821066664130, 16926529911360,101559568461498,609358576176168, 3656154950132850,21936940173733200, 131621672448624618,789730128885258168] |