n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 60 |
4 | 885 |
5 | 14605 |
6 | 258126 |
7 | 4778340 |
8 | 91460415 |
9 | 1795377600 |
10 | 35946770255 |
11 | 731245323256 |
12 | 15070729457030 |
13 | 314011160190675 |
14 | 6603561278126200 |
15 | 139980599432879480 |
16 | 2987856960226960551 |
17 | 64162892863813071450 |
18 | 1385270621375211268550 |
[1,1,5,60,885,14605,258126,4778340,91460415, 1795377600,35946770255,731245323256, 15070729457030,314011160190675,6603561278126200, 139980599432879480,2987856960226960551, 64162892863813071450,1385270621375211268550] |