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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 266 |
| 3 | 45296 |
| 4 | 7958726 |
| 5 | 1495388159 |
| 6 | 295887993624 |
| 7 | 60790021361170 |
| 8 | 12845435390707724 |
| 9 | 2774049143394729653 |
| 10 | 609542744597785306189 |
| 11 | 135840016223787254538508 |
| 12 | 30629983532857972983331740 |
| 13 | 6975352854342057056747327899 |
| 14 | 1602003695575764851150428242804 |
| 15 | 370631496919828403109950449644134 |
[0,1,266,45296,7958726,1495388159,295887993624, 60790021361170,12845435390707724, 2774049143394729653,609542744597785306189, 135840016223787254538508, 30629983532857972983331740, 6975352854342057056747327899, 1602003695575764851150428242804, 370631496919828403109950449644134] |