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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 30 |
| 3 | 5 |
| 4 | 364 |
| 5 | 875 |
| 6 | 7032 |
| 7 | 6935 |
| 8 | 72368 |
| 9 | 171951 |
| 10 | 2032096 |
| 11 | 194655 |
| 12 | 24516288 |
| 13 | 53851839 |
| 14 | 440252288 |
| 15 | 487436671 |
| 16 | 4543326976 |
| 17 | 11921128191 |
| 18 | 131655802368 |
| 19 | 33345471999 |
| 20 | 1514803915776 |
| 21 | 3700849601535 |
| 22 | 30571457902592 |
| 23 | 26989915478015 |
| 24 | 304889978859520 |
| 25 | 773616460869631 |
[1,2,30,5,364,875,7032,6935,72368,171951,2032096, 194655,24516288,53851839,440252288,487436671, 4543326976,11921128191,131655802368,33345471999, 1514803915776,3700849601535,30571457902592, 26989915478015,304889978859520,773616460869631] |