The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 10 |
| 3 | 241 |
| 4 | 10585 |
| 5 | 732826 |
| 6 | 73233205 |
| 7 | 9955632961 |
| 8 | 1764233731270 |
| 9 | 394629336427021 |
| 10 | 108652463882802505 |
| 11 | 36084903957564392206 |
| 12 | 14217903951354603567385 |
| 13 | 6554505383225768210009041 |
| 14 | 3493988190176442653240091010 |
| 15 | 2131975894217009666242489287001 |
[1,1,10,241,10585,732826,73233205,9955632961, 1764233731270,394629336427021,108652463882802505, 36084903957564392206,14217903951354603567385, 6554505383225768210009041, 3493988190176442653240091010, 2131975894217009666242489287001] |