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| n | a(n) |
|---|---|
| 12 | 1 |
| 13 | 2612138803 |
| 14 | 5848516394205967951 |
| 15 | 12790160886494733304250601655 |
| 16 | 27862895440026036935366271191556077095 |
| 17 | 60659259454351187375733691191139808969963672263 |
| 18 | 132044834674141024683472683631781840882298387938848321159 |
[1,2612138803,5848516394205967951, 12790160886494733304250601655, 27862895440026036935366271191556077095, 60659259454351187375733691191139808969963672263, 13204483467414102468347268363178184088229838793884\ 8321159] |