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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -3 |
| 3 | 65 |
| 4 | -7 |
| 5 | -166311 |
| 6 | -3326411 |
| 7 | 250810573 |
| 8 | -15 |
| 9 | -70140643372783 |
| 10 | -16050395192832019 |
| 11 | 1253057168563221 |
| 12 | 489854682254665727977 |
| 13 | -4242091290877439975 |
| 14 | -567128617209289175040000027 |
| 15 | -469414018487906631382763519971 |
| 16 | -31 |
| 17 | -99189110152385088675839967 |
| 18 | 60136002178464962241806622916607999965 |
| 19 | 655685669998967370706944000037 |
| 20 | -195445976621261878742262620176483614720000039 |
[1,-3,65,-7,-166311,-3326411,250810573,-15, -70140643372783,-16050395192832019, 1253057168563221,489854682254665727977, -4242091290877439975,-567128617209289175040000027, -469414018487906631382763519971,-31, -99189110152385088675839967, 60136002178464962241806622916607999965, 655685669998967370706944000037, -195445976621261878742262620176483614720000039] |