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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 7 |
| 4 | 26 |
| 5 | 521 |
| 6 | 434 |
| 7 | 13021 |
| 8 | 8138 |
| 9 | 36169 |
| 10 | 813802 |
| 11 | 8138021 |
| 12 | 3390842 |
| 13 | 203450521 |
| 14 | 508626302 |
| 15 | 1695421007 |
| 16 | 1589457194 |
| 17 | 127156575521 |
| 18 | 35321270978 |
| 19 | 3178914388021 |
| 20 | 3973642985026 |
| 21 | 26490953233507 |
| 22 | 198682149251302 |
| 23 | 1986821492513021 |
| 24 | 413921144273546 |
| 25 | 49670537312825521 |
[1,2,7,26,521,434,13021,8138,36169,813802,8138021, 3390842,203450521,508626302,1695421007,1589457194, 127156575521,35321270978,3178914388021, 3973642985026,26490953233507,198682149251302, 1986821492513021,413921144273546, 49670537312825521] |