n | a(n) |
---|---|
0 | 1 |
1 | 20 |
2 | 449 |
3 | 6792 |
4 | 67063 |
5 | 484419 |
6 | 2750715 |
7 | 12919671 |
8 | 52083292 |
9 | 185179593 |
10 | 592791088 |
11 | 1736022657 |
12 | 4710111660 |
13 | 11959634412 |
14 | 28654640036 |
15 | 65224656452 |
16 | 141850935657 |
17 | 296163412400 |
18 | 596041392921 |
19 | 1160330645548 |
20 | 2191579277799 |
21 | 4026627536451 |
22 | 7213267409435 |
[1,20,449,6792,67063,484419,2750715,12919671, 52083292,185179593,592791088,1736022657, 4710111660,11959634412,28654640036,65224656452, 141850935657,296163412400,596041392921, 1160330645548,2191579277799,4026627536451, 7213267409435] |