Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 10 |
6 | 42 |
7 | 357 |
8 | 2400 |
9 | 20142 |
10 | 180280 |
11 | 1814395 |
12 | 19944804 |
13 | 239500794 |
14 | 3113326062 |
15 | 43589143560 |
16 | 653834280960 |
17 | 10461394943992 |
18 | 177843662409312 |
19 | 3201186852863991 |
20 | 60822549182544440 |
21 | 1216451004087794832 |
22 | 25545471063559372750 |
23 | 562000363888803839989 |
[1,0,0,0,10,42,357,2400,20142,180280,1814395, 19944804,239500794,3113326062,43589143560, 653834280960,10461394943992,177843662409312, 3201186852863991,60822549182544440, 1216451004087794832,25545471063559372750, 562000363888803839989] |