n | a(n) |
---|---|
1 | 8 |
2 | 20 |
3 | 84 |
4 | 500 |
5 | 3540 |
6 | 26996 |
7 | 212052 |
8 | 1684724 |
9 | 13442772 |
10 | 107437172 |
11 | 859182420 |
12 | 6872514548 |
13 | 54977282004 |
14 | 439809752948 |
15 | 3518452514388 |
16 | 28147543587572 |
17 | 225180119118036 |
18 | 1801440264196724 |
19 | 14411520047331156 |
20 | 115292154179921396 |
21 | 922337214843187668 |
22 | 7378697662956950900 |
23 | 59029581136289955924 |
[8,20,84,500,3540,26996,212052,1684724,13442772, 107437172,859182420,6872514548,54977282004, 439809752948,3518452514388,28147543587572, 225180119118036,1801440264196724, 14411520047331156,115292154179921396, 922337214843187668,7378697662956950900, 59029581136289955924] |