n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 48 |
3 | 784 |
4 | 14784 |
5 | 302960 |
6 | 6554624 |
7 | 147336384 |
8 | 3407207936 |
9 | 80538522544 |
10 | 1937217000576 |
11 | 47262640993344 |
12 | 1166745699940352 |
13 | 29090562313367104 |
14 | 731508300407392256 |
15 | 18530124876627212032 |
16 | 472416442490053386240 |
17 | 12112314681652019632304 |
18 | 312110730162591314249088 |
[1,4,48,784,14784,302960,6554624,147336384, 3407207936,80538522544,1937217000576, 47262640993344,1166745699940352,29090562313367104, 731508300407392256,18530124876627212032, 472416442490053386240,12112314681652019632304, 312110730162591314249088] |