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| n | a(n) |
|---|---|
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 3 |
| 16 | 14 |
| 17 | 35 |
| 18 | 87 |
| 19 | 293 |
| 20 | 4878 |
| 21 | 22692 |
| 22 | 537091 |
| 23 | 11662046 |
| 24 | 46524257309 |
| 25 | 1092759075795116 |
| 26 | 159271598072111593692 |
| 27 | 3317896028408943302861450818 |
| 28 | 594387514787460257685718548861374067606 |
| 29 | 91930654519343922607883279072515432244874866615506797 |
[0,0,0,0,0,3,14,35,87,293,4878,22692,537091, 11662046,46524257309,1092759075795116, 159271598072111593692, 3317896028408943302861450818, 594387514787460257685718548861374067606, 91930654519343922607883279072515432244874866615506\ 797] |