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| n | a(n) |
|---|---|
| 9 | 10 |
| 10 | 220 |
| 11 | 2002 |
| 12 | 11440 |
| 13 | 48620 |
| 14 | 167960 |
| 15 | 497420 |
| 16 | 1307504 |
| 17 | 3124550 |
| 18 | 6906900 |
| 19 | 14307150 |
| 20 | 28048800 |
| 21 | 52451256 |
| 22 | 94143280 |
| 23 | 163011640 |
| 24 | 273438880 |
| 25 | 445891810 |
| 26 | 708930508 |
| 27 | 1101716330 |
| 28 | 1677106640 |
| 29 | 2505433700 |
| 30 | 3679075400 |
| 31 | 5317936260 |
| 32 | 7575968400 |
| 33 | 10648873950 |
| 34 | 14783142660 |
[10,220,2002,11440,48620,167960,497420,1307504, 3124550,6906900,14307150,28048800,52451256, 94143280,163011640,273438880,445891810,708930508, 1101716330,1677106640,2505433700,3679075400, 5317936260,7575968400,10648873950,14783142660] |