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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 2 |
| 8 | 10 |
| 9 | 46 |
| 10 | 166 |
| 11 | 496 |
| 12 | 1288 |
| 13 | 3004 |
| 14 | 6437 |
| 15 | 12888 |
| 16 | 24464 |
| 17 | 44728 |
| 18 | 80428 |
| 19 | 146320 |
| 20 | 278104 |
| 21 | 564929 |
| 22 | 1225811 |
| 23 | 2778772 |
| 24 | 6396236 |
| 25 | 14620646 |
| 26 | 32760586 |
| 27 | 71565796 |
| 28 | 152344397 |
| 29 | 316911454 |
| 30 | 647536777 |
| 31 | 1308456096 |
| 32 | 2635130392 |
| 33 | 5330198752 |
| 34 | 10896635912 |
[1,1,1,1,1,1,1,2,10,46,166,496,1288,3004,6437, 12888,24464,44728,80428,146320,278104,564929, 1225811,2778772,6396236,14620646,32760586, 71565796,152344397,316911454,647536777,1308456096, 2635130392,5330198752,10896635912] |