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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 5 |
| 5 | 8 |
| 6 | 25 |
| 7 | 44 |
| 8 | 4664 |
| 9 | 6568 |
| 10 | 1353025 |
| 11 | 2919526 |
| 12 | 5709589 |
| 13 | 7827725 |
| 14 | 64661225 |
| 15 | 85132756 |
| 16 | 153872408 |
| 17 | 743947534 |
| 18 | 34304296003 |
| 19 | 38832409867 |
| 20 | 40263727492 |
| 21 | 1946603375348 |
| 22 | 2469908330348 |
| 23 | 64471909888247 |
| 24 | 274267749806485 |
| 25 | 888906849689897 |
| 26 | 896501949422459 |
[1,2,4,5,8,25,44,4664,6568,1353025,2919526, 5709589,7827725,64661225,85132756,153872408, 743947534,34304296003,38832409867,40263727492, 1946603375348,2469908330348,64471909888247, 274267749806485,888906849689897,896501949422459] |