| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 8 |
| 9 | 13 |
| 10 | 31 |
| 11 | 49 |
| 12 | 109 |
| 13 | 170 |
| 14 | 371 |
| 15 | 581 |
| 16 | 1270 |
| 17 | 2010 |
| 18 | 4417 |
| 19 | 7063 |
| 20 | 15581 |
| 21 | 25123 |
| 22 | 55554 |
| 23 | 90179 |
| 24 | 199752 |
| 25 | 326089 |
| 26 | 723351 |
| 27 | 1186670 |
| 28 | 2635764 |
| 29 | 4342829 |
| 30 | 9657336 |
| 31 | 15973459 |
| 32 | 35558165 |
| 33 | 59017088 |
| 34 | 131500422 |
| 35 | 218932442 |
| 36 | 488234057 |
| 37 | 815127111 |
| 38 | 1819186163 |
[1,1,1,1,1,1,2,3,8,13,31,49,109,170,371,581,1270, 2010,4417,7063,15581,25123,55554,90179,199752, 326089,723351,1186670,2635764,4342829,9657336, 15973459,35558165,59017088,131500422,218932442, 488234057,815127111,1819186163] |