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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 5 |
| 8 | 5 |
| 9 | 19 |
| 10 | 19 |
| 11 | 79 |
| 12 | 79 |
| 13 | 523 |
| 14 | 523 |
| 15 | 9169 |
| 16 | 9169 |
| 17 | 183491 |
| 18 | 183491 |
| 19 | 4964583 |
| 20 | 4964583 |
| 21 | 219022025 |
| 22 | 219022025 |
| 23 | 16321424419 |
| 24 | 16321424419 |
| 25 | 1718337883769 |
| 26 | 1718337883769 |
| 27 | 267799571260427 |
| 28 | 267799571260427 |
[1,1,1,1,1,1,5,5,19,19,79,79,523,523,9169,9169, 183491,183491,4964583,4964583,219022025,219022025, 16321424419,16321424419,1718337883769, 1718337883769,267799571260427,267799571260427] |