n | a(n) |
---|---|
1 | 3 |
2 | 15 |
3 | 159 |
4 | 867 |
5 | 19239 |
6 | 107985 |
7 | 1222563 |
8 | 6965835 |
9 | 319153335 |
10 | 1835486085 |
11 | 21185534577 |
12 | 122622340677 |
13 | 2846090375067 |
14 | 16550504577861 |
15 | 192854402926251 |
16 | 1125503935556763 |
17 | 105252693980913879 |
18 | 615999836125850637 |
19 | 7219077361263238917 |
20 | 42347454581722163361 |
21 | 994637701798929524937 |
[3,15,159,867,19239,107985,1222563,6965835, 319153335,1835486085,21185534577,122622340677, 2846090375067,16550504577861,192854402926251, 1125503935556763,105252693980913879, 615999836125850637,7219077361263238917, 42347454581722163361,994637701798929524937] |