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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 7 |
| 3 | 16 |
| 4 | 34 |
| 5 | 265 |
| 6 | 512 |
| 7 | 209 |
| 8 | 7343 |
| 9 | 41503 |
| 10 | 65536 |
| 11 | 1546 |
| 12 | 304186 |
| 13 | 6474726 |
| 14 | 24997921 |
| 15 | 33554432 |
| 16 | 13327 |
| 17 | 17525812 |
| 18 | 1709852332 |
| 19 | 21252557377 |
| 20 | 57366997447 |
| 21 | 68719476736 |
| 22 | 130922 |
| 23 | 1336221251 |
| 24 | 702998475376 |
| 25 | 34215495252681 |
| 26 | 252540841305558 |
| 27 | 505874809287625 |
[2,7,16,34,265,512,209,7343,41503,65536,1546, 304186,6474726,24997921,33554432,13327,17525812, 1709852332,21252557377,57366997447,68719476736, 130922,1336221251,702998475376,34215495252681, 252540841305558,505874809287625] |