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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 20 |
| 3 | 34 |
| 4 | 5008 |
| 5 | 3711 |
| 6 | 1948356 |
| 7 | 937924 |
| 8 | 1205220416 |
| 9 | 429794605 |
| 10 | 1098765432100 |
| 11 | 310989720966 |
| 12 | 1390027428561168 |
| 13 | 326011399456939 |
| 14 | 2332600912091693348 |
| 15 | 466937872906120456 |
| 16 | 5016202619581534249216 |
| 17 | 875711370981239308953 |
[0,1,20,34,5008,3711,1948356,937924,1205220416, 429794605,1098765432100,310989720966, 1390027428561168,326011399456939, 2332600912091693348,466937872906120456, 5016202619581534249216,875711370981239308953] |