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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 30 |
| 6 | 56 |
| 7 | 104 |
| 8 | 194 |
| 9 | 364 |
| 10 | 686 |
| 11 | 1300 |
| 12 | 2474 |
| 13 | 4726 |
| 14 | 9056 |
| 15 | 17402 |
| 16 | 33520 |
| 17 | 64704 |
| 18 | 125140 |
| 19 | 242452 |
| 20 | 470494 |
| 21 | 914380 |
| 22 | 1779498 |
| 23 | 3467550 |
| 24 | 6764914 |
| 25 | 13212346 |
| 26 | 25831066 |
| 27 | 50549666 |
| 28 | 99010012 |
| 29 | 194087894 |
| 30 | 380760580 |
| 31 | 747510488 |
| 32 | 1468499452 |
| 33 | 2886706064 |
[1,2,4,8,16,30,56,104,194,364,686,1300,2474,4726, 9056,17402,33520,64704,125140,242452,470494, 914380,1779498,3467550,6764914,13212346,25831066, 50549666,99010012,194087894,380760580,747510488, 1468499452,2886706064] |