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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 13 |
| 5 | 31 |
| 6 | 76 |
| 7 | 198 |
| 8 | 520 |
| 9 | 1380 |
| 10 | 3741 |
| 11 | 10129 |
| 12 | 27837 |
| 13 | 76805 |
| 14 | 213610 |
| 15 | 596911 |
| 16 | 1675905 |
| 17 | 4724994 |
| 18 | 13368647 |
| 19 | 37947482 |
| 20 | 108029690 |
| 21 | 308345825 |
| 22 | 882177037 |
| 23 | 2529347318 |
| 24 | 7266270535 |
| 25 | 20912111193 |
| 26 | 60284108632 |
| 27 | 174049197968 |
| 28 | 503218277350 |
| 29 | 1456840566871 |
| 30 | 4222790593589 |
| 31 | 12254164026373 |
| 32 | 35598556455398 |
| 33 | 103518206389389 |
[1,3,5,13,31,76,198,520,1380,3741,10129,27837, 76805,213610,596911,1675905,4724994,13368647, 37947482,108029690,308345825,882177037,2529347318, 7266270535,20912111193,60284108632,174049197968, 503218277350,1456840566871,4222790593589, 12254164026373,35598556455398,103518206389389] |