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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 14 |
| 3 | 54 |
| 4 | 216 |
| 5 | 864 |
| 6 | 3456 |
| 7 | 13824 |
| 8 | 55296 |
| 9 | 221184 |
| 10 | 884736 |
| 11 | 3538944 |
| 12 | 14155776 |
| 13 | 56623104 |
| 14 | 226492416 |
| 15 | 905969664 |
| 16 | 3623878656 |
| 17 | 14495514624 |
| 18 | 57982058496 |
| 19 | 231928233984 |
| 20 | 927712935936 |
| 21 | 3710851743744 |
| 22 | 14843406974976 |
| 23 | 59373627899904 |
[2,14,54,216,864,3456,13824,55296,221184,884736, 3538944,14155776,56623104,226492416,905969664, 3623878656,14495514624,57982058496,231928233984, 927712935936,3710851743744,14843406974976, 59373627899904] |