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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 28 |
| 2 | 334 |
| 3 | -15848 |
| 4 | -894644 |
| 5 | 3476368 |
| 6 | 2110287304 |
| 7 | 49701850912 |
| 8 | -5255753182064 |
| 9 | -326087752380992 |
| 10 | 12155343320691424 |
| 11 | 1807744498693823872 |
| 12 | -9552103473995480384 |
| 13 | -10029279190218522359552 |
| 14 | -224940012003245065821056 |
| 15 | 56886138562285829022188032 |
[1,28,334,-15848,-894644,3476368,2110287304, 49701850912,-5255753182064,-326087752380992, 12155343320691424,1807744498693823872, -9552103473995480384,-10029279190218522359552, -224940012003245065821056, 56886138562285829022188032] |