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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 18 |
| 2 | 194 |
| 3 | 2130 |
| 4 | 23426 |
| 5 | 257682 |
| 6 | 2834498 |
| 7 | 31179474 |
| 8 | 342974210 |
| 9 | 3772716306 |
| 10 | 41499879362 |
| 11 | 456498672978 |
| 12 | 5021485402754 |
| 13 | 55236339430290 |
| 14 | 607599733733186 |
| 15 | 6683597071065042 |
| 16 | 73519567781715458 |
| 17 | 808715245598870034 |
| 18 | 8895867701587570370 |
| 19 | 97854544717463274066 |
[2,18,194,2130,23426,257682,2834498,31179474, 342974210,3772716306,41499879362,456498672978, 5021485402754,55236339430290,607599733733186, 6683597071065042,73519567781715458, 808715245598870034,8895867701587570370, 97854544717463274066] |