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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 9 |
| 3 | 193 |
| 4 | 5881 |
| 5 | 212529 |
| 6 | 8467113 |
| 7 | 359065953 |
| 8 | 15899869785 |
| 9 | 726714474385 |
| 10 | 34027390026505 |
| 11 | 1623911649356481 |
| 12 | 78700579447559353 |
| 13 | 3862817734061600497 |
| 14 | 191625298483691960169 |
| 15 | 9592547730682848672801 |
| 16 | 483950907590044260965145 |
[1,1,9,193,5881,212529,8467113,359065953, 15899869785,726714474385,34027390026505, 1623911649356481,78700579447559353, 3862817734061600497,191625298483691960169, 9592547730682848672801,483950907590044260965145] |