| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 30 |
| 3 | 255 |
| 4 | 2294 |
| 5 | 20104 |
| 6 | 166552 |
| 7 | 1331471 |
| 8 | 10508084 |
| 9 | 81594334 |
| 10 | 624717186 |
| 11 | 4739157622 |
| 12 | 35661603332 |
| 13 | 266406928267 |
| 14 | 1978392492492 |
| 15 | 14617489508922 |
| 16 | 107516403089962 |
| 17 | 787701900591720 |
| 18 | 5750928990829306 |
| 19 | 41856485102494388 |
[5,30,255,2294,20104,166552,1331471,10508084, 81594334,624717186,4739157622,35661603332, 266406928267,1978392492492,14617489508922, 107516403089962,787701900591720,5750928990829306, 41856485102494388] |