The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 22 |
| 2 | 484 |
| 3 | 990 |
| 4 | 11242 |
| 5 | 33088 |
| 6 | 272206 |
| 7 | 992574 |
| 8 | 6800596 |
| 9 | 28280758 |
| 10 | 173714530 |
| 11 | 783832896 |
| 12 | 4504621990 |
| 13 | 21385325830 |
| 14 | 117970266436 |
| 15 | 578059231662 |
| 16 | 3109202601274 |
| 17 | 15538154773504 |
| 18 | 82277236170910 |
| 19 | 416242718387694 |
[22,484,990,11242,33088,272206,992574,6800596, 28280758,173714530,783832896,4504621990, 21385325830,117970266436,578059231662, 3109202601274,15538154773504,82277236170910, 416242718387694] |