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| n | a(n) |
|---|---|
| 5 | 1 |
| 6 | 10 |
| 7 | 55 |
| 8 | 225 |
| 9 | 765 |
| 10 | 2287 |
| 11 | 6215 |
| 12 | 15680 |
| 13 | 37265 |
| 14 | 84300 |
| 15 | 182933 |
| 16 | 383070 |
| 17 | 777705 |
| 18 | 1536490 |
| 19 | 2963120 |
| 20 | 5592060 |
| 21 | 10349465 |
| 22 | 18817760 |
| 23 | 33665870 |
| 24 | 59341785 |
| 25 | 103176877 |
| 26 | 177131330 |
| 27 | 300530125 |
| 28 | 504318530 |
| 29 | 837632700 |
| 30 | 1377874861 |
| 31 | 2246061540 |
| 32 | 3630059510 |
| 33 | 5819556060 |
| 34 | 9258393655 |
| 35 | 14622472250 |
[1,10,55,225,765,2287,6215,15680,37265,84300, 182933,383070,777705,1536490,2963120,5592060, 10349465,18817760,33665870,59341785,103176877, 177131330,300530125,504318530,837632700, 1377874861,2246061540,3630059510,5819556060, 9258393655,14622472250] |