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| n | a(n) |
|---|---|
| 1 | 1397712 |
| 2 | 7237508 |
| 3 | 37416120 |
| 4 | 194284128 |
| 5 | 1011141204 |
| 6 | 5278556248 |
| 7 | 27621051428 |
| 8 | 144947327048 |
| 9 | 762363854488 |
| 10 | 4020742256396 |
| 11 | 21251673956576 |
| 12 | 112622324473000 |
| 13 | 598085615932288 |
[1397712,7237508,37416120,194284128,1011141204, 5278556248,27621051428,144947327048,762363854488, 4020742256396,21251673956576,112622324473000, 598085615932288] |