The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 18 |
| 2 | 269 |
| 3 | 564 |
| 4 | 2020 |
| 5 | 2460 |
| 6 | 4821 |
| 7 | 10499 |
| 8 | 17583 |
| 9 | 25030 |
| 10 | 27154 |
| 11 | 34238 |
| 12 | 39583 |
| 13 | 82915 |
| 14 | 92295 |
| 15 | 107454 |
| 16 | 121248 |
| 17 | 142474 |
| 18 | 148961 |
| 19 | 159031 |
| 20 | 162482 |
| 21 | 233036 |
| 22 | 250923 |
| 23 | 342833 |
| 24 | 365844 |
| 25 | 427518 |
| 26 | 460792 |
| 27 | 467647 |
| 28 | 481615 |
| 29 | 741275 |
[18,269,564,2020,2460,4821,10499,17583,25030, 27154,34238,39583,82915,92295,107454,121248, 142474,148961,159031,162482,233036,250923,342833, 365844,427518,460792,467647,481615,741275] |