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| n | a(n) |
|---|---|
| 1 | -355687428096000 |
| 2 | 1223405590579200 |
| 3 | -1821602444624640 |
| 4 | 1583313975727488 |
| 5 | -909299905844112 |
| 6 | 369012649234384 |
| 7 | -110228466184200 |
| 8 | 24871845297936 |
| 9 | -4308105301929 |
| 10 | 577924894833 |
| 11 | -60202693980 |
| 12 | 4853222764 |
| 13 | -299650806 |
| 14 | 13896582 |
| 15 | -468180 |
| 16 | 10812 |
| 17 | -153 |
| 18 | 1 |
[-355687428096000,1223405590579200, -1821602444624640,1583313975727488, -909299905844112,369012649234384,-110228466184200, 24871845297936,-4308105301929,577924894833, -60202693980,4853222764,-299650806,13896582, -468180,10812,-153,1] |