Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 2 |
4 | 8 |
5 | 39 |
6 | 218 |
7 | 1440 |
8 | 10922 |
9 | 93754 |
10 | 898484 |
11 | 9508956 |
12 | 110145408 |
13 | 1385996396 |
14 | 18826451052 |
15 | 274552411175 |
16 | 4278441740820 |
17 | 70950825535270 |
18 | 1247552015661833 |
19 | 23183674957715736 |
20 | 454013634588599833 |
[1,0,0,2,8,39,218,1440,10922,93754,898484,9508956, 110145408,1385996396,18826451052,274552411175, 4278441740820,70950825535270,1247552015661833, 23183674957715736,454013634588599833] |