n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 25 |
4 | 213 |
5 | 2131 |
6 | 23729 |
7 | 283681 |
8 | 3574222 |
9 | 46866712 |
10 | 634204317 |
11 | 8803501719 |
12 | 124799484286 |
13 | 1800669899917 |
14 | 26374204955323 |
15 | 391331674556361 |
16 | 5872226011836383 |
17 | 88993282402441857 |
18 | 1360552594176453319 |
[1,4,25,213,2131,23729,283681,3574222,46866712, 634204317,8803501719,124799484286,1800669899917, 26374204955323,391331674556361,5872226011836383, 88993282402441857,1360552594176453319] |