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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 32 |
| 3 | 224 |
| 4 | 1723 |
| 5 | 14569 |
| 6 | 135286 |
| 7 | 1375882 |
| 8 | 15263414 |
| 9 | 183817326 |
| 10 | 2391291386 |
| 11 | 33443618930 |
| 12 | 500611975023 |
| 13 | 7988044467121 |
| 14 | 135376576319870 |
| 15 | 2428721569276698 |
| 16 | 45988428905194350 |
| 17 | 916607431346170686 |
| 18 | 19182997480530342168 |
| 19 | 420606731490047403144 |
[1,5,32,224,1723,14569,135286,1375882,15263414, 183817326,2391291386,33443618930,500611975023, 7988044467121,135376576319870,2428721569276698, 45988428905194350,916607431346170686, 19182997480530342168,420606731490047403144] |