The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 8 | 1 |
| 9 | 2 |
| 10 | 6 |
| 11 | 17 |
| 12 | 50 |
| 13 | 143 |
| 14 | 416 |
| 15 | 1198 |
| 16 | 3467 |
| 17 | 10019 |
| 18 | 29001 |
| 19 | 83945 |
| 20 | 243228 |
| 21 | 705012 |
| 22 | 2044935 |
| 23 | 5934425 |
| 24 | 17231410 |
| 25 | 50058023 |
| 26 | 145491836 |
| 27 | 423056364 |
| 28 | 1230683672 |
| 29 | 3581556220 |
| 30 | 10427172296 |
| 31 | 30368394833 |
| 32 | 88476965536 |
| 33 | 257860132679 |
| 34 | 751756288476 |
| 35 | 2192311994070 |
| 36 | 6395199688864 |
[1,2,6,17,50,143,416,1198,3467,10019,29001,83945, 243228,705012,2044935,5934425,17231410,50058023, 145491836,423056364,1230683672,3581556220, 10427172296,30368394833,88476965536,257860132679, 751756288476,2192311994070,6395199688864] |