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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 31 |
| 4 | 336 |
| 5 | 3372 |
| 6 | 34973 |
| 7 | 356907 |
| 8 | 3612084 |
| 9 | 36476490 |
| 10 | 367550925 |
| 11 | 3697683123 |
| 12 | 37160602675 |
| 13 | 373149954035 |
| 14 | 3744652623110 |
[0,2,31,336,3372,34973,356907,3612084,36476490, 367550925,3697683123,37160602675,373149954035, 3744652623110] |