| n | a(n) |
|---|---|
| 0 | 3 |
| 1 | 14 |
| 2 | 170 |
| 3 | 1152 |
| 4 | 10326 |
| 5 | 78963 |
| 6 | 656624 |
| 7 | 5213426 |
| 8 | 42439104 |
| 9 | 340790424 |
| 10 | 2756911059 |
| 11 | 22212987398 |
| 12 | 179367321962 |
| 13 | 1446643119600 |
| 14 | 11675121964830 |
| 15 | 94190699548803 |
| 16 | 760042877382104 |
| 17 | 6132290825573090 |
| 18 | 49480275246158592 |
| 19 | 399234462516292656 |
| 20 | 3221300621136623523 |
| 21 | 25991449993525766654 |
| 22 | 209716174247167839146 |
[3,14,170,1152,10326,78963,656624,5213426, 42439104,340790424,2756911059,22212987398, 179367321962,1446643119600,11675121964830, 94190699548803,760042877382104,6132290825573090, 49480275246158592,399234462516292656, 3221300621136623523,25991449993525766654, 209716174247167839146] |