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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 26 |
| 4 | 224 |
| 5 | 2476 |
| 6 | 23224 |
| 7 | 287376 |
| 8 | 3757374 |
| 9 | 52257501 |
| 10 | 788478999 |
| 11 | 12610776876 |
| 12 | 212979510624 |
| 13 | 3790898971876 |
| 14 | 70777961166874 |
| 15 | 1381742116784376 |
| 16 | 28138911700128124 |
| 17 | 596359893046340626 |
| 18 | 13125567196055049999 |
| 19 | 299467375895770156251 |
| 20 | 7070998303069778171874 |
| 21 | 172523963169549496984376 |
| 22 | 4343634679080455046328124 |
| 23 | 112703773700255237721093751 |
| 24 | 3010180318995682243232265624 |
| 25 | 82668711264219381166762578126 |
[1,9,26,224,2476,23224,287376,3757374,52257501, 788478999,12610776876,212979510624,3790898971876, 70777961166874,1381742116784376,28138911700128124, 596359893046340626,13125567196055049999, 299467375895770156251,7070998303069778171874, 172523963169549496984376, 4343634679080455046328124, 112703773700255237721093751, 3010180318995682243232265624, 82668711264219381166762578126] |