n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 12 |
4 | 120 |
5 | 1595 |
6 | 25823 |
7 | 485254 |
8 | 10278756 |
9 | 240814116 |
10 | 6159248281 |
11 | 170371486813 |
12 | 5060981349876 |
13 | 160573684489465 |
14 | 5417789356278015 |
15 | 193693975380448414 |
16 | 7315287863625954712 |
17 | 291082028021247460862 |
18 | 12174286414586563087259 |
19 | 534059044249856004891501 |
20 | 24524697505864740171996008 |
[1,1,2,12,120,1595,25823,485254,10278756, 240814116,6159248281,170371486813,5060981349876, 160573684489465,5417789356278015, 193693975380448414,7315287863625954712, 291082028021247460862,12174286414586563087259, 534059044249856004891501, 24524697505864740171996008] |