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| n | a(n) |
|---|---|
| 1 | 87 |
| 2 | 1873 |
| 3 | 32556 |
| 4 | 494555 |
| 5 | 6820330 |
| 6 | 87098434 |
| 7 | 1056792824 |
| 8 | 12348422785 |
| 9 | 140068079857 |
| 10 | 1551453118671 |
| 11 | 16861973522704 |
| 12 | 180469353488204 |
| 13 | 1907201493832312 |
| 14 | 19944555935687461 |
| 15 | 206749466424763994 |
[87,1873,32556,494555,6820330,87098434,1056792824, 12348422785,140068079857,1551453118671, 16861973522704,180469353488204,1907201493832312, 19944555935687461,206749466424763994] |