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| n | a(n) |
|---|---|
| 0 | 18 |
| 1 | 19 |
| 2 | 94 |
| 3 | 207 |
| 4 | 508 |
| 5 | 9351 |
| 6 | 19210 |
| 7 | 47771 |
| 8 | 210294 |
| 9 | 258065 |
| 10 | 9500634 |
| 11 | 9758699 |
| 12 | 48535430 |
| 13 | 106829559 |
| 14 | 262194548 |
| 15 | 4826331423 |
| 16 | 9914857394 |
| 17 | 24656046211 |
| 18 | 108539042238 |
| 19 | 133195088449 |
| 20 | 4903562226402 |
| 21 | 5036757314851 |
| 22 | 25050591485806 |
| 23 | 55137940286463 |
| 24 | 135326472058732 |
[18,19,94,207,508,9351,19210,47771,210294,258065, 9500634,9758699,48535430,106829559,262194548, 4826331423,9914857394,24656046211,108539042238, 133195088449,4903562226402,5036757314851, 25050591485806,55137940286463,135326472058732] |