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| n | a(n) |
|---|---|
| 3 | 30 |
| 4 | 486 |
| 5 | 5880 |
| 6 | 64464 |
| 7 | 679195 |
| 8 | 7043814 |
| 9 | 72707844 |
| 10 | 751082244 |
| 11 | 7785793080 |
| 12 | 81092511276 |
| 13 | 849060054420 |
| 14 | 8937364804760 |
| 15 | 94564644817767 |
| 16 | 1005496779910572 |
| 17 | 10740560345206680 |
| 18 | 115218669255806304 |
| 19 | 1240869923563291014 |
| 20 | 13412271463669969704 |
| 21 | 145454088924589697192 |
[30,486,5880,64464,679195,7043814,72707844, 751082244,7785793080,81092511276,849060054420, 8937364804760,94564644817767,1005496779910572, 10740560345206680,115218669255806304, 1240869923563291014,13412271463669969704, 145454088924589697192] |