The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 216 |
| 3 | 1944810000 |
| 4 | 3913539300000 |
| 5 | 9992390792252042651841000000 |
| 6 | 1068203306732039166959846576540631630000000 |
| 7 | 1316372224808054302435728765171857144838608100000000 |
[1,16,216,1944810000,3913539300000, 9992390792252042651841000000, 1068203306732039166959846576540631630000000, 13163722248080543024357287651718571448386081000000\ 00] |