The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 20 |
| 1 | 201 |
| 2 | 8060 |
| 3 | 80801 |
| 4 | 3240100 |
| 5 | 32481801 |
| 6 | 1302512140 |
| 7 | 13057603201 |
| 8 | 523606640180 |
| 9 | 5249124005001 |
| 10 | 210488566840220 |
| 11 | 2110134792407201 |
| 12 | 84615880263128260 |
| 13 | 848268937423689801 |
| 14 | 34015373377210720300 |
| 15 | 341002002709530892801 |
| 16 | 13674095481758446432340 |
[20,201,8060,80801,3240100,32481801,1302512140, 13057603201,523606640180,5249124005001, 210488566840220,2110134792407201, 84615880263128260,848268937423689801, 34015373377210720300,341002002709530892801, 13674095481758446432340] |