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| n | a(n) |
|---|---|
| 1 | 618856 |
| 2 | 1351487 |
| 3 | 3598070 |
| 4 | 11202222 |
| 5 | 36042356 |
| 6 | 96309005 |
| 7 | 238103801 |
| 8 | 525494884 |
| 9 | 1506994147 |
| 10 | 4139903099 |
| 11 | 11764995474 |
| 12 | 31290573704 |
| 13 | 88480288728 |
| 14 | 253051501122 |
| 15 | 727283120714 |
| 16 | 2089269652552 |
| 17 | 5949174391537 |
| 18 | 17124088568470 |
| 19 | 49150997914813 |
[618856,1351487,3598070,11202222,36042356, 96309005,238103801,525494884,1506994147, 4139903099,11764995474,31290573704,88480288728, 253051501122,727283120714,2089269652552, 5949174391537,17124088568470,49150997914813] |