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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 5 |
| 3 | 73 |
| 4 | 2221 |
| 5 | 353777 |
| 6 | 19595573 |
| 7 | 239046803 |
| 8 | 198972350083 |
| 9 | 1535302297058707 |
| 10 | 100536661265514127 |
| 11 | 8974880059175708288297 |
| 12 | 818810519369821323965929237 |
| 13 | 990666575600755815615137883006341 |
| 14 | 1220749860499992165560973207703210595953 |
[0,1,5,73,2221,353777,19595573,239046803, 198972350083,1535302297058707,100536661265514127, 8974880059175708288297, 818810519369821323965929237, 990666575600755815615137883006341, 1220749860499992165560973207703210595953] |