The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 8790 |
| 2 | 31180 |
| 3 | 111746 |
| 4 | 402010 |
| 5 | 1447334 |
| 6 | 5207128 |
| 7 | 18707320 |
| 8 | 67741331 |
| 9 | 245362806 |
| 10 | 888353351 |
| 11 | 3214054074 |
| 12 | 11619045815 |
| 13 | 41973825395 |
| 14 | 151838831019 |
| 15 | 549477715623 |
| 16 | 1988574285707 |
| 17 | 7195624944829 |
| 18 | 26029899268167 |
| 19 | 94135791585627 |
[8790,31180,111746,402010,1447334,5207128, 18707320,67741331,245362806,888353351,3214054074, 11619045815,41973825395,151838831019,549477715623, 1988574285707,7195624944829,26029899268167, 94135791585627] |