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| n | a(n) |
|---|---|
| 8 | 1 |
| 9 | 2 |
| 10 | 7 |
| 11 | 23 |
| 12 | 78 |
| 13 | 262 |
| 14 | 893 |
| 15 | 3039 |
| 16 | 10405 |
| 17 | 35692 |
| 18 | 122807 |
| 19 | 423392 |
| 20 | 1462748 |
| 21 | 5061942 |
| 22 | 17544791 |
| 23 | 60893535 |
| 24 | 211610421 |
| 25 | 736189821 |
| 26 | 2563823467 |
| 27 | 8937012397 |
| 28 | 31179543205 |
| 29 | 108865543805 |
| 30 | 380389514123 |
| 31 | 1330027798273 |
| 32 | 4653356214277 |
| 33 | 16290208735442 |
| 34 | 57059113819218 |
[1,2,7,23,78,262,893,3039,10405,35692,122807, 423392,1462748,5061942,17544791,60893535, 211610421,736189821,2563823467,8937012397, 31179543205,108865543805,380389514123, 1330027798273,4653356214277,16290208735442, 57059113819218] |