n | a(n) |
---|---|
8 | 1 |
9 | 0 |
10 | 45 |
11 | 330 |
12 | 4455 |
13 | 56628 |
14 | 795795 |
15 | 11930490 |
16 | 190900710 |
17 | 3245287760 |
18 | 58415223438 |
19 | 1109889169740 |
20 | 22197783520770 |
21 | 466153453732680 |
22 | 10255375982438730 |
23 | 235873647595600476 |
24 | 5660967542295146895 |
25 | 141524188557377590800 |
[1,0,45,330,4455,56628,795795,11930490,190900710, 3245287760,58415223438,1109889169740, 22197783520770,466153453732680,10255375982438730, 235873647595600476,5660967542295146895, 141524188557377590800] |