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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 53550 |
| 3 | 420420 |
| 4 | 422310 |
| 5 | 1624350 |
| 6 | 2130240 |
| 7 | 3399900 |
| 8 | 5199810 |
| 9 | 5246010 |
| 10 | 6549270 |
| 11 | 7384440 |
| 12 | 7775880 |
| 13 | 9516570 |
| 14 | 9565710 |
| 15 | 10430280 |
| 16 | 11845260 |
| 17 | 13207950 |
| 18 | 14562870 |
| 19 | 14619990 |
| 20 | 18747960 |
| 21 | 20099940 |
| 22 | 21596820 |
| 23 | 21968100 |
| 24 | 24358950 |
| 25 | 24610740 |
| 26 | 26916120 |
| 27 | 28359240 |
| 28 | 30838080 |
[6,53550,420420,422310,1624350,2130240,3399900, 5199810,5246010,6549270,7384440,7775880,9516570, 9565710,10430280,11845260,13207950,14562870, 14619990,18747960,20099940,21596820,21968100, 24358950,24610740,26916120,28359240,30838080] |