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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 0 |
| 6 | 1 |
| 7 | 1 |
| 8 | -1 |
| 9 | 1 |
| 10 | 2 |
| 11 | -3 |
| 12 | 5 |
| 13 | 17 |
| 14 | -91 |
| 15 | 1532 |
| 16 | 139497 |
| 17 | -213710951 |
| 18 | 29812036392235 |
| 19 | 6371158648631364574889 |
| 20 | -189937213493701003981668660072118562 |
| 21 | 1210120120447335073097142485947209203511752911347585124133 |
[1,1,1,1,0,1,1,-1,1,2,-3,5,17,-91,1532,139497, -213710951,29812036392235,6371158648631364574889, -189937213493701003981668660072118562, 12101201204473350730971424859472092035117529113475\ 85124133] |