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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 0 |
| 5 | -2 |
| 6 | -3 |
| 7 | 3 |
| 8 | -10 |
| 9 | -28 |
| 10 | 279 |
| 11 | -7803 |
| 12 | -2177000 |
| 13 | 16987130758 |
| 14 | -36980983660158439 |
| 15 | -628200804994572838287982201 |
| 16 | 23231483704802676028750227275477328286998042 |
| 17 | -14594036764575342428539025427350979161630036659925283421091485142638200 |
[1,1,1,0,-2,-3,3,-10,-28,279,-7803,-2177000, 16987130758,-36980983660158439, -628200804994572838287982201, 23231483704802676028750227275477328286998042, -1459403676457534242853902542735097916163003665992\ 5283421091485142638200] |