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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 1710 |
| 3 | 14596 |
| 4 | 73348 |
| 5 | 269472 |
| 6 | 803434 |
| 7 | 2061940 |
| 8 | 4725456 |
| 9 | 9911008 |
| 10 | 19355302 |
| 11 | 35643204 |
| 12 | 62486620 |
| 13 | 105058816 |
| 14 | 170389218 |
| 15 | 267823732 |
| 16 | 409555624 |
| 17 | 611232000 |
| 18 | 892640926 |
| 19 | 1278484228 |
| 20 | 1799241012 |
| 21 | 2492126944 |
| 22 | 3402154330 |
| 23 | 4583298036 |
[64,1710,14596,73348,269472,803434,2061940, 4725456,9911008,19355302,35643204,62486620, 105058816,170389218,267823732,409555624,611232000, 892640926,1278484228,1799241012,2492126944, 3402154330,4583298036] |