The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 21 |
| 2 | 393 |
| 3 | 17731 |
| 4 | 2234571 |
| 5 | 20111503 |
| 6 | 1991042087 |
| 7 | 33278851497 |
| 8 | 119803867191 |
| 9 | 54989975121893 |
| 10 | 15672142912044093 |
| 11 | 987345003473390379 |
| 12 | 204380415719298965303 |
| 13 | 9197118707369867504211 |
| 14 | 248322205098990353297597 |
[21,393,17731,2234571,20111503,1991042087, 33278851497,119803867191,54989975121893, 15672142912044093,987345003473390379, 204380415719298965303,9197118707369867504211, 248322205098990353297597] |