The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 15 | 1 |
| 16 | 281 |
| 17 | 13297 |
| 18 | 348523 |
| 19 | 6807872 |
| 20 | 113042841 |
| 21 | 1709159987 |
| 22 | 24469725009 |
| 23 | 339634663517 |
| 24 | 4638106688642 |
| 25 | 62916588549562 |
| 26 | 853199404241913 |
| 27 | 11616795214297568 |
| 28 | 159290998975659690 |
| 29 | 2204454156023259166 |
| 30 | 30838108887627521579 |
| 31 | 436552647970998600862 |
| 32 | 6258905749718943712307 |
[1,281,13297,348523,6807872,113042841,1709159987, 24469725009,339634663517,4638106688642, 62916588549562,853199404241913,11616795214297568, 159290998975659690,2204454156023259166, 30838108887627521579,436552647970998600862, 6258905749718943712307] |