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A260619 as a simple table
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 4 |
| 3 | 216 |
| 4 | 165888 |
| 5 | 604800000 |
| 6 | 48372940800000 |
| 7 | 43156963184025600000 |
| 8 | 1392410948543163924480000000 |
| 9 | 668916177911197542484208831692800000 |
| 10 | 8199617664717905359483850194944000000000000000 |
| 11 | 2401010998878767104110478543683244630474752000000000000000 |
[0,0,4,216,165888,604800000,48372940800000, 43156963184025600000,1392410948543163924480000000, 668916177911197542484208831692800000, 8199617664717905359483850194944000000000000000, 24010109988787671041104785436832446304747520000000\ 00000000] |