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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 415 |
| 2 | 8623 |
| 3 | 64405 |
| 4 | 289981 |
| 5 | 965071 |
| 6 | 2626975 |
| 7 | 6195673 |
| 8 | 13123945 |
| 9 | 25572511 |
| 10 | 46610191 |
| 11 | 80439085 |
| 12 | 132644773 |
| 13 | 210471535 |
| 14 | 323122591 |
| 15 | 482085361 |
| 16 | 701481745 |
| 17 | 998443423 |
| 18 | 1393512175 |
| 19 | 1911065221 |
| 20 | 2579765581 |
| 21 | 3433037455 |
| 22 | 4509566623 |
| 23 | 5853825865 |
| 24 | 7516625401 |
| 25 | 9555688351 |
[1,415,8623,64405,289981,965071,2626975,6195673, 13123945,25572511,46610191,80439085,132644773, 210471535,323122591,482085361,701481745,998443423, 1393512175,1911065221,2579765581,3433037455, 4509566623,5853825865,7516625401,9555688351] |