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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 127 |
| 3 | 26609 |
| 4 | 5828185 |
| 5 | 1244027317 |
| 6 | 258054207727 |
| 7 | 52402156308977 |
| 8 | 10488803639337560 |
| 9 | 2079716852900452250 |
| 10 | 409870041643305514072 |
| 11 | 80466951297324661639450 |
| 12 | 15759844503630649015980996 |
| 13 | 3082231209190859509953543989 |
| 14 | 602325527248635884295374077954 |
[1,1,127,26609,5828185,1244027317,258054207727, 52402156308977,10488803639337560, 2079716852900452250,409870041643305514072, 80466951297324661639450, 15759844503630649015980996, 3082231209190859509953543989, 602325527248635884295374077954] |