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| n | a(n) |
|---|---|
| 1 | 70 |
| 2 | 518 |
| 3 | 2118 |
| 4 | 10790 |
| 5 | 38182 |
| 6 | 168998 |
| 7 | 568902 |
| 8 | 2360486 |
| 9 | 7845670 |
| 10 | 31545638 |
| 11 | 105340998 |
| 12 | 417228710 |
[70,518,2118,10790,38182,168998,568902,2360486, 7845670,31545638,105340998,417228710] |