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| n | a(n) |
|---|---|
| 1 | 520 |
| 2 | 27380 |
| 3 | 1427084 |
| 4 | 74491726 |
| 5 | 3887550226 |
| 6 | 202888369698 |
| 7 | 10588548225946 |
| 8 | 552606468835138 |
| 9 | 28840014212057954 |
| 10 | 1505133360863436226 |
| 11 | 78551501834521854626 |
| 12 | 4099529385937940277538 |
| 13 | 213950603015925389996738 |
[520,27380,1427084,74491726,3887550226, 202888369698,10588548225946,552606468835138, 28840014212057954,1505133360863436226, 78551501834521854626,4099529385937940277538, 213950603015925389996738] |