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| n | a(n) |
|---|---|
| 1 | 257 |
| 2 | 4097 |
| 3 | 65537 |
| 4 | 1048577 |
| 5 | 16777217 |
| 6 | 268435457 |
| 7 | 4294967297 |
| 8 | 68719476737 |
| 9 | 1099511627777 |
| 10 | 17592186044417 |
| 11 | 281474976710657 |
| 12 | 4503599627370497 |
| 13 | 72057594037927937 |
| 14 | 1152921504606846977 |
| 15 | 18446744073709551617 |
[257,4097,65537,1048577,16777217,268435457, 4294967297,68719476737,1099511627777, 17592186044417,281474976710657,4503599627370497, 72057594037927937,1152921504606846977, 18446744073709551617] |