| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 16 |
| 3 | 48 |
| 4 | 256 |
| 5 | 928 |
| 6 | 4096 |
| 7 | 15820 |
| 8 | 65536 |
| 9 | 259584 |
| 10 | 1048576 |
| 11 | 4182016 |
| 12 | 16777216 |
| 13 | 67051520 |
| 14 | 268435456 |
| 15 | 1073476576 |
| 16 | 4294967296 |
| 17 | 17178689536 |
| 18 | 68719476736 |
| 19 | 274872664064 |
| 20 | 1099511627776 |
| 21 | 4398023442432 |
| 22 | 17592186044416 |
| 23 | 70368643424320 |
[2,16,48,256,928,4096,15820,65536,259584,1048576, 4182016,16777216,67051520,268435456,1073476576, 4294967296,17178689536,68719476736,274872664064, 1099511627776,4398023442432,17592186044416, 70368643424320] |