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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 6 |
| 2 | 244 |
| 3 | 4290 |
| 4 | 43594 |
| 5 | 461199 |
| 6 | 6140627 |
| 7 | 344066593 |
| 8 | 6088808015 |
| 9 | 54919110102 |
| 10 | 292094863096 |
| 11 | 30532003369831 |
| 12 | 544610447984326 |
| 13 | 6953455057511697 |
| 14 | 56476345222041382 |
| 15 | 1066743304578446956 |
| 16 | 21103704665147157507 |
| 17 | 118426088416480894469 |
| 18 | 11699789754825195592947 |
[0,6,244,4290,43594,461199,6140627,344066593, 6088808015,54919110102,292094863096, 30532003369831,544610447984326,6953455057511697, 56476345222041382,1066743304578446956, 21103704665147157507,118426088416480894469, 11699789754825195592947] |