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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 105 |
| 8 | 241 |
| 9 | 1729 |
| 10 | 3313 |
| 11 | 39657 |
| 12 | 104401 |
| 13 | 2969697 |
| 14 | 9697625 |
| 15 | 3123603217 |
| 16 | 14435373673 |
| 17 | 2122314213377 |
| 18 | 11094314340193 |
| 19 | 1937878683810145 |
| 20 | 12836441729414657 |
| 21 | 6546745088072698929 |
| 22 | 53161394239931798437 |
[1,1,1,1,1,1,105,241,1729,3313,39657,104401, 2969697,9697625,3123603217,14435373673, 2122314213377,11094314340193,1937878683810145, 12836441729414657,6546745088072698929, 53161394239931798437] |