The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 4 |
| 2 | 7 |
| 3 | 26 |
| 4 | 28 |
| 5 | 127 |
| 6 | 199 |
| 7 | 296 |
| 8 | 511 |
| 9 | 3119 |
| 10 | 16861 |
| 11 | 18164 |
| 12 | 19453 |
| 13 | 20468 |
| 14 | 270824 |
[0,4,7,26,28,127,199,296,511,3119,16861,18164, 19453,20468,270824] |