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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 5 |
| 3 | 11 |
| 4 | 23 |
| 5 | 47 |
| 6 | 79 |
| 7 | 157 |
| 8 | 313 |
| 9 | 619 |
| 10 | 1237 |
| 11 | 2473 |
| 12 | 4909 |
| 13 | 9817 |
| 14 | 19603 |
| 15 | 39199 |
| 16 | 78193 |
| 17 | 156019 |
| 18 | 311347 |
| 19 | 622669 |
| 20 | 1244149 |
| 21 | 2487739 |
| 22 | 4975111 |
| 23 | 9950221 |
| 24 | 19900399 |
| 25 | 39800797 |
| 26 | 79601461 |
| 27 | 159202369 |
| 28 | 318404629 |
| 29 | 636788881 |
| 30 | 1273577761 |
| 31 | 2547155419 |
| 32 | 5094310069 |
| 33 | 10188620041 |
[2,5,11,23,47,79,157,313,619,1237,2473,4909,9817, 19603,39199,78193,156019,311347,622669,1244149, 2487739,4975111,9950221,19900399,39800797, 79601461,159202369,318404629,636788881,1273577761, 2547155419,5094310069,10188620041] |