The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 24 |
| 3 | 107 |
| 4 | 959 |
| 5 | 8433 |
| 6 | 76951 |
| 7 | 705763 |
| 8 | 6501334 |
| 9 | 59966772 |
| 10 | 553530259 |
| 11 | 5110834507 |
| 12 | 47195589996 |
| 13 | 435849686772 |
| 14 | 4025162271602 |
| 15 | 37173665139688 |
| 16 | 343312585950465 |
| 17 | 3170626942658318 |
| 18 | 29282022185584639 |
| 19 | 270431457386379172 |
[1,24,107,959,8433,76951,705763,6501334,59966772, 553530259,5110834507,47195589996,435849686772, 4025162271602,37173665139688,343312585950465, 3170626942658318,29282022185584639, 270431457386379172] |