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| n | a(n) |
|---|---|
| 11 | 2 |
| 12 | 570 |
| 13 | 34643 |
| 14 | 1139465 |
| 15 | 26298831 |
| 16 | 479669603 |
| 17 | 7386945631 |
| 18 | 100099764774 |
| 19 | 1227140160022 |
| 20 | 13879804132399 |
| 21 | 146957303797639 |
| 22 | 1472647088474040 |
| 23 | 14087369324642004 |
| 24 | 129522280702233381 |
| 25 | 1150891407181302417 |
| 26 | 9927963973481921295 |
| 27 | 83454334937159452579 |
[2,570,34643,1139465,26298831,479669603, 7386945631,100099764774,1227140160022, 13879804132399,146957303797639,1472647088474040, 14087369324642004,129522280702233381, 1150891407181302417,9927963973481921295, 83454334937159452579] |