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 | 3 |
4 | 0 |
5 | 10 |
6 | 90 |
7 | 308 |
8 | 1680 |
9 | 13560 |
10 | 123480 |
11 | 788568 |
12 | 7646760 |
13 | 76432720 |
14 | 841320480 |
15 | 8436217208 |
16 | 103473901440 |
17 | 1320024546240 |
18 | 17546621595840 |
19 | 235942960528128 |
20 | 3481689023521920 |
21 | 54132188358133120 |
22 | 858287202343992960 |
23 | 14187715233218409728 |
24 | 246498724782915369600 |
[1,0,0,3,0,10,90,308,1680,13560,123480,788568, 7646760,76432720,841320480,8436217208, 103473901440,1320024546240,17546621595840, 235942960528128,3481689023521920, 54132188358133120,858287202343992960, 14187715233218409728,246498724782915369600] |