| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 13 |
| 2 | 155 |
| 3 | 1847 |
| 4 | 22009 |
| 5 | 262261 |
| 6 | 3125123 |
| 7 | 37239215 |
| 8 | 443745457 |
| 9 | 5287706269 |
| 10 | 63008729771 |
| 11 | 750817050983 |
| 12 | 8946795882025 |
| 13 | 106610733533317 |
| 14 | 1270382006517779 |
| 15 | 15137973344680031 |
| 16 | 180385298129642593 |
[1,13,155,1847,22009,262261,3125123,37239215, 443745457,5287706269,63008729771,750817050983, 8946795882025,106610733533317,1270382006517779, 15137973344680031,180385298129642593] |