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| n | a(n) |
|---|---|
| 0 | 4 |
| 1 | 8 |
| 2 | 16 |
| 3 | 32 |
| 4 | 64 |
| 5 | 128 |
| 6 | 256 |
| 7 | 512 |
| 8 | 1024 |
| 9 | 2048 |
| 10 | 4096 |
| 11 | 8192 |
| 12 | 16384 |
| 13 | 32768 |
| 14 | 65536 |
| 15 | 131072 |
| 16 | 262144 |
| 17 | 524288 |
| 18 | 1048576 |
| 19 | 2097152 |
| 20 | 4194304 |
| 21 | 8388608 |
| 22 | 16777216 |
| 23 | 33554432 |
| 24 | 67108864 |
| 25 | 134217728 |
| 26 | 268435456 |
| 27 | 536870912 |
| 28 | 1073741824 |
| 29 | 2147483648 |
| 30 | 4294967296 |
| 31 | 8589934592 |
[4,8,16,32,64,128,256,512,1024,2048,4096,8192, 16384,32768,65536,131072,262144,524288,1048576, 2097152,4194304,8388608,16777216,33554432, 67108864,134217728,268435456,536870912,1073741824, 2147483648,4294967296,8589934592] |