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| n | a(n) |
|---|---|
| 1 | -25 |
| 2 | -119 |
| 3 | -313 |
| 4 | -1121 |
| 5 | 113 |
| 6 | 25117 |
| 7 | 503651 |
| 8 | 9687523 |
| 9 | 223068481 |
| 10 | 6469663439 |
| 11 | 200560439477 |
| 12 | 7420738065889 |
| 13 | 304250263447703 |
| 14 | 13082761331566207 |
| 15 | 614889782588342533 |
| 16 | 32589158477189839351 |
| 17 | 1922760350154212412089 |
| 18 | 117288381359406970682507 |
| 19 | 7858321551080267055521179 |
| 20 | 557940830126698960967026373 |
[-25,-119,-313,-1121,113,25117,503651,9687523, 223068481,6469663439,200560439477,7420738065889, 304250263447703,13082761331566207, 614889782588342533,32589158477189839351, 1922760350154212412089,117288381359406970682507, 7858321551080267055521179, 557940830126698960967026373] |