The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 4 |
| 3 | 7 |
| 4 | 24 |
| 5 | 15 |
| 6 | 96 |
| 7 | 63 |
| 8 | 384 |
| 9 | 1023 |
| 10 | 256 |
| 11 | 3583 |
| 12 | 1792 |
| 13 | 14335 |
| 14 | 5632 |
| 15 | 62463 |
| 16 | 73216 |
| 17 | 262143 |
| 18 | 24576 |
| 19 | 999423 |
| 20 | 1302528 |
| 21 | 4095999 |
| 22 | 4399104 |
| 23 | 7995391 |
| 24 | 27017216 |
| 25 | 63406079 |
| 26 | 75431936 |
| 27 | 120717311 |
| 28 | 429654016 |
| 29 | 232783871 |
| 30 | 1682178048 |
| 31 | 3221225471 |
| 32 | 2164391936 |
| 33 | 17146314751 |
[1,3,4,7,24,15,96,63,384,1023,256,3583,1792,14335, 5632,62463,73216,262143,24576,999423,1302528, 4095999,4399104,7995391,27017216,63406079, 75431936,120717311,429654016,232783871,1682178048, 3221225471,2164391936,17146314751] |