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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 1 |
| 8 | 9 |
| 9 | 46 |
| 10 | 176 |
| 11 | 562 |
| 12 | 1586 |
| 13 | 4096 |
| 14 | 9908 |
| 15 | 22819 |
| 16 | 50643 |
| 17 | 109294 |
| 18 | 230964 |
| 19 | 480492 |
| 20 | 988116 |
| 21 | 2014992 |
| 22 | 4084248 |
| 23 | 8243109 |
| 24 | 16587165 |
| 25 | 33308926 |
| 26 | 66794952 |
| 27 | 133820134 |
| 28 | 267936278 |
| 29 | 536249296 |
| 30 | 1072973612 |
| 31 | 2146540999 |
[0,0,0,0,0,0,0,1,9,46,176,562,1586,4096,9908, 22819,50643,109294,230964,480492,988116,2014992, 4084248,8243109,16587165,33308926,66794952, 133820134,267936278,536249296,1072973612, 2146540999] |