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| n | a(n) |
|---|---|
| 8 | 1 |
| 9 | 7 |
| 10 | 56 |
| 11 | 318 |
| 12 | 1408 |
| 13 | 5207 |
| 14 | 16772 |
| 15 | 48410 |
| 16 | 127661 |
| 17 | 312172 |
| 18 | 715827 |
| 19 | 1552945 |
| 20 | 3210066 |
| 21 | 6359208 |
| 22 | 12131129 |
| 23 | 22374522 |
| 24 | 40034564 |
| 25 | 69695820 |
| 26 | 118346132 |
| 27 | 196435550 |
| 28 | 319321325 |
| 29 | 509215461 |
| 30 | 797775355 |
| 31 | 1229513719 |
| 32 | 1866237409 |
[1,7,56,318,1408,5207,16772,48410,127661,312172, 715827,1552945,3210066,6359208,12131129,22374522, 40034564,69695820,118346132,196435550,319321325, 509215461,797775355,1229513719,1866237409] |