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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 12 |
| 2 | 82 |
| 3 | 572 |
| 4 | 4002 |
| 5 | 28012 |
| 6 | 196082 |
| 7 | 1372572 |
| 8 | 9608002 |
| 9 | 67256012 |
| 10 | 470792082 |
| 11 | 3295544572 |
| 12 | 23068812002 |
| 13 | 161481684012 |
| 14 | 1130371788082 |
| 15 | 7912602516572 |
| 16 | 55388217616002 |
| 17 | 387717523312012 |
| 18 | 2714022663184082 |
| 19 | 18998158642288572 |
[2,12,82,572,4002,28012,196082,1372572,9608002, 67256012,470792082,3295544572,23068812002, 161481684012,1130371788082,7912602516572, 55388217616002,387717523312012,2714022663184082, 18998158642288572] |