The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 112 |
| 3 | 222 |
| 4 | 3597 |
| 5 | 16277 |
| 6 | 223094 |
| 7 | 2596017 |
| 8 | 24865898 |
| 9 | 323299576 |
| 10 | 3787531827 |
| 11 | 42992271002 |
| 12 | 528380654753 |
| 13 | 6288086729013 |
| 14 | 74014457048229 |
| 15 | 893371655402215 |
| 16 | 10664175483163555 |
| 17 | 126858791168600580 |
| 18 | 1521513088649360086 |
[13,112,222,3597,16277,223094,2596017,24865898, 323299576,3787531827,42992271002,528380654753, 6288086729013,74014457048229,893371655402215, 10664175483163555,126858791168600580, 1521513088649360086] |