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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 10 |
| 7 | 16 |
| 8 | 38 |
| 9 | 80 |
| 10 | 160 |
| 11 | 328 |
| 12 | 752 |
| 13 | 1712 |
| 14 | 4000 |
| 15 | 8736 |
| 16 | 16940 |
| 17 | 34816 |
| 18 | 83904 |
| 19 | 178304 |
| 20 | 433408 |
| 21 | 1031552 |
| 22 | 2601600 |
| 23 | 5193984 |
| 24 | 11318272 |
| 25 | 26631680 |
| 26 | 62674688 |
| 27 | 160582656 |
| 28 | 336680960 |
| 29 | 715578368 |
| 30 | 1829193728 |
| 31 | 4724027392 |
| 32 | 11004676992 |
[1,1,2,3,6,10,16,38,80,160,328,752,1712,4000,8736, 16940,34816,83904,178304,433408,1031552,2601600, 5193984,11318272,26631680,62674688,160582656, 336680960,715578368,1829193728,4724027392, 11004676992] |