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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 13 |
| 4 | 17 |
| 5 | 41 |
| 6 | 775 |
| 7 | 1401 |
| 8 | 5577 |
| 9 | 17161 |
| 10 | 650231 |
| 11 | 1451429 |
| 12 | 7098723 |
| 13 | 31949841 |
| 14 | 154314217 |
| 15 | 9549744787 |
| 16 | 26332319993 |
| 17 | 148700630777 |
| 18 | 751749919063 |
| 19 | 4928035762245 |
| 20 | 28171233908619 |
| 21 | 3075951573975973 |
| 22 | 9866703399859373 |
| 23 | 65413443830714351 |
| 24 | 364017353336405579 |
[1,2,1,13,17,41,775,1401,5577,17161,650231, 1451429,7098723,31949841,154314217,9549744787, 26332319993,148700630777,751749919063, 4928035762245,28171233908619,3075951573975973, 9866703399859373,65413443830714351, 364017353336405579] |