The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 56 |
| 2 | 1876 |
| 3 | 36028 |
| 4 | 594286 |
| 5 | 9779558 |
| 6 | 163752797 |
| 7 | 2772658693 |
| 8 | 47273211674 |
| 9 | 809416786834 |
| 10 | 13894273785956 |
| 11 | 238867008057298 |
| 12 | 4110191305837227 |
| 13 | 70761275087518799 |
| 14 | 1218613301433676245 |
| 15 | 20990363391641556709 |
[56,1876,36028,594286,9779558,163752797, 2772658693,47273211674,809416786834, 13894273785956,238867008057298,4110191305837227, 70761275087518799,1218613301433676245, 20990363391641556709] |