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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 34 |
| 3 | 48 |
| 4 | 200 |
| 5 | 2856 |
| 6 | 14016 |
| 7 | 122232 |
| 8 | 813704 |
| 9 | 6066698 |
| 10 | 43025282 |
| 11 | 311301306 |
| 12 | 2237774274 |
| 13 | 16116010598 |
| 14 | 116014746014 |
| 15 | 835190383512 |
| 16 | 6012793756932 |
| 17 | 43286754359604 |
| 18 | 311629669798802 |
| 19 | 2243474218816140 |
| 20 | 16151152920460132 |
[0,34,48,200,2856,14016,122232,813704,6066698, 43025282,311301306,2237774274,16116010598, 116014746014,835190383512,6012793756932, 43286754359604,311629669798802,2243474218816140, 16151152920460132] |