The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 31 |
| 3 | 3025 |
| 4 | 611501 |
| 5 | 210766920 |
| 6 | 110687251039 |
| 7 | 82310957214948 |
| 8 | 82318282158320505 |
| 9 | 106563273280541795575 |
| 10 | 173373343599189364594756 |
| 11 | 346289681454731077633095526 |
| 12 | 833091176987705031151553054843 |
| 13 | 2376102520162485084539597049185710 |
[1,1,31,3025,611501,210766920,110687251039, 82310957214948,82318282158320505, 106563273280541795575,173373343599189364594756, 346289681454731077633095526, 833091176987705031151553054843, 2376102520162485084539597049185710] |