The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 32 |
| 6 | 64 |
| 7 | 96 |
| 8 | 128 |
| 9 | 320 |
| 10 | 512 |
| 11 | 2048 |
| 12 | 2304 |
| 13 | 19922944 |
| 14 | 41943040 |
| 15 | 167772160 |
[1,4,8,16,32,64,96,128,320,512,2048,2304,19922944, 41943040,167772160] |