n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 43 |
3 | 190 |
4 | 2401 |
5 | 15242 |
6 | 169952 |
7 | 1300180 |
8 | 13036591 |
9 | 108621208 |
10 | 1032057418 |
11 | 8944259474 |
12 | 82759543294 |
13 | 731238928631 |
14 | 6675861553591 |
15 | 59555740575193 |
16 | 540068620936576 |
17 | 4841141720468505 |
18 | 43752880978895078 |
19 | 393139794235777264 |
20 | 3547076584685999770 |
[1,4,43,190,2401,15242,169952,1300180,13036591, 108621208,1032057418,8944259474,82759543294, 731238928631,6675861553591,59555740575193, 540068620936576,4841141720468505, 43752880978895078,393139794235777264, 3547076584685999770] |