n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 3 |
5 | 16 |
6 | 96 |
7 | 812 |
8 | 10957 |
9 | 260494 |
10 | 11713772 |
11 | 1006689871 |
12 | 164059928509 |
13 | 50335918374222 |
14 | 29003488479015273 |
15 | 31397381309486933777 |
16 | 63969560164056545231089 |
17 | 245871831711240782887877980 |
18 | 1787331725280384281389706209909 |
19 | 24636021429463931875328533035140871 |
20 | 645465483198968863672173418327800803328 |
[1,0,0,1,3,16,96,812,10957,260494,11713772, 1006689871,164059928509,50335918374222, 29003488479015273,31397381309486933777, 63969560164056545231089, 245871831711240782887877980, 1787331725280384281389706209909, 24636021429463931875328533035140871, 645465483198968863672173418327800803328] |