n | a(n) |
---|---|
1 | 2 |
2 | 4 |
3 | 31 |
4 | 304 |
5 | 40044 |
6 | 500522 |
7 | 86094668 |
8 | 1167752848 |
9 | 225001039696 |
10 | 652498288154820 |
11 | 9451735761626880 |
12 | 29731605314969017772 |
13 | 6529673496702876605072 |
14 | 97300805803445759460364 |
[2,4,31,304,40044,500522,86094668,1167752848, 225001039696,652498288154820,9451735761626880, 29731605314969017772,6529673496702876605072, 97300805803445759460364] |