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| n | a(n) |
|---|---|
| 3 | 4 |
| 4 | 84 |
| 5 | 2470 |
| 6 | 108390 |
| 7 | 7192444 |
| 8 | 726782784 |
| 9 | 112795368970 |
| 10 | 27132558531330 |
| 11 | 10196751602156944 |
| 12 | 6022337098348167564 |
| 13 | 5612248139616665602510 |
| 14 | 8274349264629020203315230 |
| 15 | 19333678744046195877906230404 |
| 16 | 71675537050405087142116150917624 |
| 17 | 421915518251999125756688245906168690 |
[4,84,2470,108390,7192444,726782784,112795368970, 27132558531330,10196751602156944, 6022337098348167564,5612248139616665602510, 8274349264629020203315230, 19333678744046195877906230404, 71675537050405087142116150917624, 421915518251999125756688245906168690] |