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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1183 |
| 3 | 22654 |
| 4 | 566656 |
| 5 | 10002542 |
| 6 | 192100836 |
| 7 | 3258530608 |
| 8 | 56916559941 |
| 9 | 940858829922 |
| 10 | 15693717431672 |
| 11 | 254647316356204 |
| 12 | 4136953520012344 |
| 13 | 66194476183413344 |
| 14 | 1057401264518371179 |
| 15 | 16737766253590304358 |
[0,1183,22654,566656,10002542,192100836, 3258530608,56916559941,940858829922, 15693717431672,254647316356204,4136953520012344, 66194476183413344,1057401264518371179, 16737766253590304358] |