| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 45 |
| 2 | 8193 |
| 3 | 250957 |
| 4 | 3029217 |
| 5 | 21362301 |
| 6 | 106420465 |
| 7 | 415866333 |
| 8 | 1358612097 |
| 9 | 3868151437 |
| 10 | 9876543201 |
| 11 | 23084307885 |
| 12 | 50147947873 |
| 13 | 102436518237 |
| 14 | 198541656657 |
| 15 | 367761728701 |
| 16 | 654820258305 |
| 17 | 1126121592813 |
| 18 | 1877892797377 |
| 19 | 3046610084877 |
[1,45,8193,250957,3029217,21362301,106420465, 415866333,1358612097,3868151437,9876543201, 23084307885,50147947873,102436518237,198541656657, 367761728701,654820258305,1126121592813, 1877892797377,3046610084877] |