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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 9 |
| 5 | 17 |
| 6 | 33 |
| 7 | 64 |
| 8 | 126 |
| 9 | 249 |
| 10 | 495 |
| 11 | 984 |
| 12 | 1962 |
| 13 | 3913 |
| 14 | 7815 |
| 15 | 15608 |
| 16 | 31194 |
| 17 | 62346 |
| 18 | 124650 |
| 19 | 249216 |
| 20 | 498348 |
| 21 | 996531 |
| 22 | 1992897 |
| 23 | 3985464 |
| 24 | 7970598 |
| 25 | 15940542 |
| 26 | 31880430 |
| 27 | 63759552 |
| 28 | 127517796 |
| 29 | 255032987 |
| 30 | 510063369 |
| 31 | 1020121528 |
| 32 | 2040237846 |
| 33 | 4080465294 |
| 34 | 8160920190 |
[2,3,5,9,17,33,64,126,249,495,984,1962,3913,7815, 15608,31194,62346,124650,249216,498348,996531, 1992897,3985464,7970598,15940542,31880430, 63759552,127517796,255032987,510063369,1020121528, 2040237846,4080465294,8160920190] |