The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 20 |
| 3 | 204 |
| 4 | 210 |
| 5 | 2310 |
| 6 | 200970 |
| 7 | 2012010 |
| 8 | 20030010 |
| 9 | 223092870 |
| 10 | 20090100030 |
| 11 | 200560490130 |
| 12 | 20055767721990 |
| 13 | 2000029432190790 |
| 14 | 20384767656323070 |
| 15 | 2000848249650860610 |
| 16 | 200001648981983238390 |
| 17 | 2183473617971732996910 |
[2,20,204,210,2310,200970,2012010,20030010, 223092870,20090100030,200560490130,20055767721990, 2000029432190790,20384767656323070, 2000848249650860610,200001648981983238390, 2183473617971732996910] |