Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 3 |
4 | 6 |
5 | 10 |
6 | 105 |
7 | 651 |
8 | 2968 |
9 | 26496 |
10 | 265905 |
11 | 2203795 |
12 | 22830456 |
13 | 288661308 |
14 | 3476579197 |
15 | 44960585775 |
16 | 671394654960 |
17 | 10329701480416 |
18 | 164573071219233 |
19 | 2865785889662019 |
20 | 52647629639499280 |
21 | 1000194250108913580 |
22 | 20125846165307543661 |
23 | 426789766980101676943 |
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