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| n | a(n) |
|---|---|
| 1 | 15 |
| 2 | 64 |
| 3 | 256 |
| 4 | 1024 |
| 5 | 4096 |
| 6 | 16384 |
| 7 | 65536 |
| 8 | 262144 |
| 9 | 1048576 |
| 10 | 4194304 |
| 11 | 16777216 |
| 12 | 67108864 |
| 13 | 268435456 |
| 14 | 1073741824 |
| 15 | 4294967296 |
| 16 | 17179869184 |
| 17 | 68719476736 |
| 18 | 274877906944 |
| 19 | 1099511627776 |
| 20 | 4398046511104 |
| 21 | 17592186044416 |
| 22 | 70368744177664 |
| 23 | 281474976710656 |
| 24 | 1125899906842624 |
[15,64,256,1024,4096,16384,65536,262144,1048576, 4194304,16777216,67108864,268435456,1073741824, 4294967296,17179869184,68719476736,274877906944, 1099511627776,4398046511104,17592186044416, 70368744177664,281474976710656,1125899906842624] |