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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 11 |
| 5 | 19 |
| 6 | 37 |
| 7 | 73 |
| 8 | 193 |
| 9 | 337 |
| 10 | 1741 |
| 11 | 5851 |
| 12 | 39157 |
| 13 | 50857 |
| 14 | 987713 |
| 15 | 1292701 |
| 16 | 11168887 |
| 17 | 21510131 |
| 18 | 177872951 |
| 19 | 220893209 |
| 20 | 932384951 |
| 21 | 15511295531 |
| 22 | 43482833879 |
| 23 | 974160518137 |
| 24 | 2539542521143 |
| 25 | 12281147701703 |
| 26 | 22439317786231 |
| 27 | 47001613189621 |
| 28 | 899695689045059 |
[2,3,5,11,19,37,73,193,337,1741,5851,39157,50857, 987713,1292701,11168887,21510131,177872951, 220893209,932384951,15511295531,43482833879, 974160518137,2539542521143,12281147701703, 22439317786231,47001613189621,899695689045059] |