n | a(n) |
---|---|
1 | 2 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 2 |
6 | 2 |
7 | 4 |
8 | 6 |
9 | 12 |
10 | 24 |
11 | 53 |
12 | 120 |
13 | 288 |
14 | 720 |
15 | 1872 |
16 | 5040 |
17 | 14035 |
18 | 40320 |
19 | 119293 |
20 | 362880 |
21 | 1133279 |
22 | 3628800 |
23 | 11899424 |
24 | 39916800 |
25 | 136843366 |
26 | 479001600 |
27 | 1710542069 |
28 | 6227020800 |
29 | 23092317923 |
30 | 87178291200 |
31 | 334838609874 |
32 | 1307674368000 |
33 | 5189998453041 |
[2,1,1,1,2,2,4,6,12,24,53,120,288,720,1872,5040, 14035,40320,119293,362880,1133279,3628800, 11899424,39916800,136843366,479001600,1710542069, 6227020800,23092317923,87178291200,334838609874, 1307674368000,5189998453041] |