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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 36 |
| 3 | 305 |
| 4 | 2833 |
| 5 | 27916 |
| 6 | 286632 |
| 7 | 3033513 |
| 8 | 32858595 |
| 9 | 362515725 |
| 10 | 4059475368 |
| 11 | 46021411644 |
| 12 | 527163783916 |
| 13 | 6092053249160 |
| 14 | 70939443268112 |
| 15 | 831558454663449 |
| 16 | 9804617762941095 |
| 17 | 116201796106426543 |
| 18 | 1383557994261012100 |
| 19 | 16541672701743657545 |
| 20 | 198510770031798279825 |
[1,5,36,305,2833,27916,286632,3033513,32858595, 362515725,4059475368,46021411644,527163783916, 6092053249160,70939443268112,831558454663449, 9804617762941095,116201796106426543, 1383557994261012100,16541672701743657545, 198510770031798279825] |