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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 18 |
| 5 | 35 |
| 6 | 68 |
| 7 | 133 |
| 8 | 262 |
| 9 | 519 |
| 10 | 1032 |
| 11 | 2057 |
| 12 | 4106 |
| 13 | 8203 |
| 14 | 16396 |
| 15 | 32781 |
| 16 | 65550 |
| 17 | 131087 |
| 18 | 262160 |
| 19 | 524305 |
| 20 | 1048594 |
| 21 | 2097171 |
| 22 | 4194324 |
| 23 | 8388629 |
| 24 | 16777238 |
| 25 | 33554455 |
| 26 | 67108888 |
| 27 | 134217753 |
| 28 | 268435482 |
| 29 | 536870939 |
| 30 | 1073741852 |
| 31 | 2147483677 |
[1,4,9,18,35,68,133,262,519,1032,2057,4106,8203, 16396,32781,65550,131087,262160,524305,1048594, 2097171,4194324,8388629,16777238,33554455, 67108888,134217753,268435482,536870939,1073741852, 2147483677] |