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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -13 |
| 2 | -27 |
| 3 | 5447 |
| 4 | 21897 |
| 5 | -8550373 |
| 6 | -51521427 |
| 7 | 28491956207 |
| 8 | 228898201617 |
| 9 | -162934942038973 |
| 10 | -1636222143855627 |
| 11 | 1423695084746914967 |
| 12 | 17156395293052656537 |
| 13 | -17642381532358409441173 |
| 14 | -248035037340684934103427 |
| 15 | 294301682652158427497809727 |
[1,-13,-27,5447,21897,-8550373,-51521427, 28491956207,228898201617,-162934942038973, -1636222143855627,1423695084746914967, 17156395293052656537,-17642381532358409441173, -248035037340684934103427, 294301682652158427497809727] |