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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 5 |
| 5 | 41 |
| 6 | 459 |
| 7 | 6469 |
| 8 | 109577 |
| 9 | 2164273 |
| 10 | 48787127 |
| 11 | 1235194181 |
| 12 | 34688329389 |
| 13 | 1069808023129 |
| 14 | 35936710441475 |
| 15 | 1305872544724357 |
| 16 | 51034409943693329 |
| 17 | 2134268774190839009 |
| 18 | 95096941799140816623 |
| 19 | 4497325804679310925957 |
[0,1,1,5,41,459,6469,109577,2164273,48787127, 1235194181,34688329389,1069808023129, 35936710441475,1305872544724357,51034409943693329, 2134268774190839009,95096941799140816623, 4497325804679310925957] |