The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 8 |
| 3 | 27 |
| 4 | 79 |
| 5 | 209 |
| 6 | 512 |
| 7 | 1183 |
| 8 | 2604 |
| 9 | 5504 |
| 10 | 11240 |
| 11 | 22277 |
| 12 | 43003 |
| 13 | 81098 |
| 14 | 149769 |
| 15 | 271404 |
| 16 | 483439 |
| 17 | 847681 |
| 18 | 1464999 |
| 19 | 2498258 |
| 20 | 4207764 |
| 21 | 7005688 |
| 22 | 11538936 |
| 23 | 18814423 |
| 24 | 30387207 |
| 25 | 48641220 |
| 26 | 77205488 |
| 27 | 121567834 |
| 28 | 189974638 |
| 29 | 294742961 |
| 30 | 454164484 |
| 31 | 695254782 |
| 32 | 1057704607 |
[1,2,8,27,79,209,512,1183,2604,5504,11240,22277, 43003,81098,149769,271404,483439,847681,1464999, 2498258,4207764,7005688,11538936,18814423, 30387207,48641220,77205488,121567834,189974638, 294742961,454164484,695254782,1057704607] |