The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 86 |
| 4 | 1094 |
| 5 | 15184 |
| 6 | 219934 |
| 7 | 3249298 |
| 8 | 48427802 |
| 9 | 724492208 |
| 10 | 10855670258 |
| 11 | 162764756218 |
| 12 | 2441054713126 |
| 13 | 36613379378704 |
| 14 | 549186530733206 |
| 15 | 8237716581278546 |
| 16 | 123565284853121186 |
| 17 | 1853476648287687712 |
[1,8,86,1094,15184,219934,3249298,48427802, 724492208,10855670258,162764756218,2441054713126, 36613379378704,549186530733206,8237716581278546, 123565284853121186,1853476648287687712] |