The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 60 |
| 2 | 1284 |
| 3 | 25572 |
| 4 | 471492 |
| 5 | 8314020 |
| 6 | 142233732 |
| 7 | 2380537188 |
| 8 | 39186271044 |
| 9 | 636703584804 |
| 10 | 10237337586180 |
| 11 | 163189207436004 |
| 12 | 2582623154662596 |
| 13 | 40622651914004388 |
| 14 | 635603382950474628 |
| 15 | 9899530341266770020 |
[60,1284,25572,471492,8314020,142233732, 2380537188,39186271044,636703584804, 10237337586180,163189207436004,2582623154662596, 40622651914004388,635603382950474628, 9899530341266770020] |