The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 42 |
| 3 | 91 |
| 4 | 577 |
| 5 | 3796 |
| 6 | 19688 |
| 7 | 110924 |
| 8 | 656555 |
| 9 | 3732300 |
| 10 | 21344656 |
| 11 | 123330565 |
| 12 | 708246405 |
| 13 | 4066193034 |
| 14 | 23408646708 |
| 15 | 134627655119 |
| 16 | 773992993358 |
| 17 | 4452175085918 |
| 18 | 25607065587568 |
| 19 | 147270467464058 |
| 20 | 847048745101385 |
[5,42,91,577,3796,19688,110924,656555,3732300, 21344656,123330565,708246405,4066193034, 23408646708,134627655119,773992993358, 4452175085918,25607065587568,147270467464058, 847048745101385] |