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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 7 |
| 3 | 15 |
| 4 | 23 |
| 5 | 63 |
| 6 | 119 |
| 7 | 255 |
| 8 | 375 |
| 9 | 1023 |
| 10 | 1783 |
| 11 | 3583 |
| 12 | 8055 |
| 13 | 16383 |
| 14 | 30455 |
| 15 | 65535 |
| 16 | 130935 |
| 17 | 262143 |
| 18 | 521975 |
| 19 | 1048575 |
| 20 | 2092919 |
| 21 | 4194303 |
| 22 | 8388343 |
| 23 | 16777215 |
| 24 | 33554295 |
| 25 | 67108863 |
| 26 | 134217463 |
| 27 | 268435455 |
| 28 | 536870775 |
| 29 | 1073741823 |
| 30 | 2147483383 |
| 31 | 4294967295 |
| 32 | 8589934455 |
[1,3,7,15,23,63,119,255,375,1023,1783,3583,8055, 16383,30455,65535,130935,262143,521975,1048575, 2092919,4194303,8388343,16777215,33554295, 67108863,134217463,268435455,536870775,1073741823, 2147483383,4294967295,8589934455] |