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| n | a(n) |
|---|---|
| 1 | 406 |
| 2 | 861 |
| 3 | 39621 |
| 4 | 2166321 |
| 5 | 3924201 |
| 6 | 11146281 |
| 7 | 14804961 |
| 8 | 19198306 |
| 9 | 73951041 |
| 10 | 83417986 |
| 11 | 97951006 |
| 12 | 209643526 |
| 13 | 310415986 |
| 14 | 522339681 |
| 15 | 526225461 |
| 16 | 583333246 |
| 17 | 611153241 |
| 18 | 801460666 |
| 19 | 1601581906 |
| 20 | 2520251506 |
| 21 | 2690954841 |
| 22 | 4455349606 |
| 23 | 6681853401 |
| 24 | 9895642221 |
| 25 | 13878029901 |
[406,861,39621,2166321,3924201,11146281,14804961, 19198306,73951041,83417986,97951006,209643526, 310415986,522339681,526225461,583333246,611153241, 801460666,1601581906,2520251506,2690954841, 4455349606,6681853401,9895642221,13878029901] |