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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 7 |
| 5 | 5 |
| 6 | 16 |
| 7 | 7 |
| 8 | 115 |
| 9 | 81 |
| 10 | 292 |
| 11 | 1 |
| 12 | 2044 |
| 13 | 1061 |
| 14 | 4480 |
| 15 | 1471 |
| 16 | 28995 |
| 17 | 21531 |
| 18 | 74197 |
| 19 | 3458 |
| 20 | 519608 |
| 21 | 272139 |
| 22 | 1148775 |
| 23 | 374339 |
| 24 | 7461401 |
| 25 | 5626064 |
| 26 | 18938567 |
| 27 | 976337 |
| 28 | 132784900 |
| 29 | 69503089 |
| 30 | 293610292 |
| 31 | 96438833 |
| 32 | 1912382628 |
| 33 | 1426849793 |
| 34 | 4838522876 |
| 35 | 258201845 |
[1,0,1,0,7,5,16,7,115,81,292,1,2044,1061,4480, 1471,28995,21531,74197,3458,519608,272139,1148775, 374339,7461401,5626064,18938567,976337,132784900, 69503089,293610292,96438833,1912382628,1426849793, 4838522876,258201845] |