The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 9 |
| 3 | 20 |
| 4 | 23 |
| 5 | 46 |
| 6 | 54 |
| 7 | 57 |
| 8 | 71 |
| 9 | 85 |
| 10 | 387 |
| 11 | 396 |
| 12 | 606 |
| 13 | 1121 |
| 14 | 2484 |
| 15 | 6786 |
| 16 | 9321 |
| 17 | 11881 |
| 18 | 18372 |
[7,9,20,23,46,54,57,71,85,387,396,606,1121,2484, 6786,9321,11881,18372] |