n | a(n) |
---|---|
0 | 2 |
1 | 4 |
2 | 12 |
3 | 76 |
4 | 572 |
5 | 5204 |
6 | 59340 |
7 | 782996 |
8 | 11707324 |
9 | 197988340 |
10 | 3720933092 |
11 | 76811352116 |
12 | 1730660689580 |
13 | 42251140165108 |
14 | 1110607948991028 |
15 | 31279537587370916 |
16 | 939737174809843644 |
17 | 29996522608581396788 |
18 | 1013814287146517455812 |
19 | 36168456215193554061044 |
[2,4,12,76,572,5204,59340,782996,11707324, 197988340,3720933092,76811352116,1730660689580, 42251140165108,1110607948991028,31279537587370916, 939737174809843644,29996522608581396788, 1013814287146517455812,36168456215193554061044] |