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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 3 |
| 7 | 8 |
| 8 | 27 |
| 9 | 75 |
| 10 | 185 |
| 11 | 441 |
| 12 | 1025 |
| 13 | 2276 |
| 14 | 4985 |
| 15 | 10753 |
| 16 | 22863 |
| 17 | 48142 |
| 18 | 100583 |
| 19 | 208663 |
| 20 | 430563 |
| 21 | 884407 |
| 22 | 1809546 |
| 23 | 3690632 |
| 24 | 7506774 |
| 25 | 15233198 |
| 26 | 30851271 |
| 27 | 62377004 |
| 28 | 125934437 |
| 29 | 253936064 |
| 30 | 511491634 |
| 31 | 1029318958 |
| 32 | 2069728850 |
| 33 | 4158873540 |
| 34 | 8351730223 |
| 35 | 16762945432 |
[0,0,0,0,0,0,3,8,27,75,185,441,1025,2276,4985, 10753,22863,48142,100583,208663,430563,884407, 1809546,3690632,7506774,15233198,30851271, 62377004,125934437,253936064,511491634,1029318958, 2069728850,4158873540,8351730223,16762945432] |