Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 30 |
6 | 360 |
7 | 2970 |
8 | 19845 |
9 | 115668 |
10 | 612360 |
11 | 3018060 |
12 | 14073345 |
13 | 62788770 |
14 | 270208224 |
15 | 1128426390 |
16 | 4594307445 |
17 | 18302828040 |
18 | 71553216240 |
19 | 275154640632 |
20 | 1042806816225 |
21 | 3901324324230 |
22 | 14427539010360 |
23 | 52801538445810 |
24 | 191427950399301 |
25 | 688082033693340 |
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