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| n | a(n) |
|---|---|
| 2 | 2 |
| 3 | 7 |
| 4 | 12 |
| 5 | 136 |
| 6 | 260 |
| 7 | 4233 |
| 8 | 8206 |
| 9 | 87112285931760246646623899502532662136846 |
| 10 | 174224571863520493293247799005065324265486 |
| 11 | 1852673427797059126777135760139006525739432040582009271277945243629142736371850 |
| 12 | 3705346855594118253554271520278013051304639509300498049262642688253220148478214 |
[2,7,12,136,260,4233,8206, 87112285931760246646623899502532662136846, 174224571863520493293247799005065324265486, 18526734277970591267771357601390065257394320405820\ 09271277945243629142736371850, 37053468555941182535542715202780130513046395093004\ 98049262642688253220148478214] |