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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 3 |
| 6 | 8 |
| 7 | 28 |
| 8 | 149 |
| 9 | 1029 |
| 10 | 8039 |
| 11 | 69375 |
| 12 | 675541 |
| 13 | 7584630 |
| 14 | 98484836 |
| 15 | 1457695370 |
| 16 | 24117255106 |
| 17 | 439505090491 |
| 18 | 8756668806615 |
| 19 | 190293641816660 |
| 20 | 4508138040317573 |
| 21 | 116298682305458460 |
| 22 | 3258081214212853975 |
| 23 | 98709283556190931672 |
| 24 | 3219222306795403565116 |
| 25 | 112538217720491999726102 |
[1,0,1,0,1,3,8,28,149,1029,8039,69375,675541, 7584630,98484836,1457695370,24117255106, 439505090491,8756668806615,190293641816660, 4508138040317573,116298682305458460, 3258081214212853975,98709283556190931672, 3219222306795403565116,112538217720491999726102] |