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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1968 |
| 2 | 2511000 |
| 3 | 2605664960 |
| 4 | 2387651205420 |
| 5 | 2011663789279200 |
| 6 | 1594903822090229312 |
| 7 | 1207416525204065938560 |
| 8 | 881461062200198781904590 |
| 9 | 624887481909094711741279120 |
| 10 | 432393768184906363401468637728 |
| 11 | 293171504960988659691658645670592 |
[1,1968,2511000,2605664960,2387651205420, 2011663789279200,1594903822090229312, 1207416525204065938560,881461062200198781904590, 624887481909094711741279120, 432393768184906363401468637728, 293171504960988659691658645670592] |