The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 24 |
| 3 | 68 |
| 4 | 192 |
| 5 | 544 |
| 6 | 1536 |
| 7 | 4352 |
| 8 | 12288 |
| 9 | 34816 |
| 10 | 98304 |
| 11 | 278528 |
| 12 | 786432 |
| 13 | 2228224 |
| 14 | 6291456 |
| 15 | 17825792 |
| 16 | 50331648 |
| 17 | 142606336 |
| 18 | 402653184 |
| 19 | 1140850688 |
| 20 | 3221225472 |
| 21 | 9126805504 |
| 22 | 25769803776 |
| 23 | 73014444032 |
| 24 | 206158430208 |
| 25 | 584115552256 |
[9,24,68,192,544,1536,4352,12288,34816,98304, 278528,786432,2228224,6291456,17825792,50331648, 142606336,402653184,1140850688,3221225472, 9126805504,25769803776,73014444032,206158430208, 584115552256] |