The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 52 |
| 3 | 128 |
| 4 | 19138 |
| 5 | 64290 |
| 6 | 105188684 |
| 7 | 476578496 |
| 8 | 8457919671084 |
| 9 | 50905137040126 |
| 10 | 9932347839826344524 |
| 11 | 79686710905619007242 |
| 12 | 170326243514575075459988044 |
| 13 | 1825631340786716600141970578 |
| 14 | 42650500910965333565149003898471568 |
[4,52,128,19138,64290,105188684,476578496, 8457919671084,50905137040126,9932347839826344524, 79686710905619007242,170326243514575075459988044, 1825631340786716600141970578, 42650500910965333565149003898471568] |