n | a(n) |
---|---|
1 | 4 |
2 | 85 |
3 | 1300 |
4 | 17500 |
5 | 220000 |
6 | 2650000 |
7 | 31000000 |
8 | 355000000 |
9 | 4000000000 |
10 | 44500000000 |
11 | 490000000000 |
12 | 5350000000000 |
13 | 58000000000000 |
14 | 625000000000000 |
15 | 6700000000000000 |
16 | 71500000000000000 |
17 | 760000000000000000 |
18 | 8050000000000000000 |
19 | 85000000000000000000 |
20 | 895000000000000000000 |
[4,85,1300,17500,220000,2650000,31000000, 355000000,4000000000,44500000000,490000000000, 5350000000000,58000000000000,625000000000000, 6700000000000000,71500000000000000, 760000000000000000,8050000000000000000, 85000000000000000000,895000000000000000000] |