The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 14 |
| 4 | 33 |
| 5 | 54 |
| 6 | 140 |
| 7 | 213 |
| 8 | 1934 |
| 9 | 35811 |
| 10 | 38405 |
| 11 | 200938 |
| 12 | 389409 |
| 13 | 1792209 |
| 14 | 5606457 |
| 15 | 8405437 |
| 16 | 68780189 |
| 17 | 880346227 |
| 18 | 85910903650 |
| 19 | 87635944146 |
| 20 | 284340107954 |
| 21 | 2195312273836 |
| 22 | 2864568747364 |
| 23 | 3155591650029 |
[1,9,14,33,54,140,213,1934,35811,38405,200938, 389409,1792209,5606457,8405437,68780189,880346227, 85910903650,87635944146,284340107954, 2195312273836,2864568747364,3155591650029] |