The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 9 | 1 |
| 10 | 91 |
| 11 | 2531 |
| 12 | 56717 |
| 13 | 1052130 |
| 14 | 17011450 |
| 15 | 248006774 |
| 16 | 3363718597 |
| 17 | 43354519587 |
| 18 | 537399621668 |
| 19 | 6456347423794 |
| 20 | 75743936924077 |
| 21 | 874027443321519 |
| 22 | 9978667891988711 |
| 23 | 113225455087566673 |
| 24 | 1281748270131892718 |
| 25 | 14527578406583077101 |
| 26 | 165413377044356558731 |
[1,91,2531,56717,1052130,17011450,248006774, 3363718597,43354519587,537399621668,6456347423794, 75743936924077,874027443321519,9978667891988711, 113225455087566673,1281748270131892718, 14527578406583077101,165413377044356558731] |