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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 3 |
| 4 | 10 |
| 5 | 15 |
| 6 | 35 |
| 7 | 63 |
| 8 | 138 |
| 9 | 255 |
| 10 | 527 |
| 11 | 1023 |
| 12 | 2083 |
| 13 | 4095 |
| 14 | 8255 |
| 15 | 16383 |
| 16 | 32906 |
| 17 | 65535 |
| 18 | 131327 |
| 19 | 262143 |
| 20 | 524815 |
| 21 | 1048575 |
| 22 | 2098175 |
| 23 | 4194303 |
| 24 | 8390691 |
| 25 | 16777215 |
| 26 | 33558527 |
| 27 | 67108863 |
| 28 | 134225983 |
| 29 | 268435455 |
| 30 | 536887295 |
| 31 | 1073741823 |
| 32 | 2147516554 |
| 33 | 4294967295 |
| 34 | 8590000127 |
| 35 | 17179869183 |
[0,2,3,10,15,35,63,138,255,527,1023,2083,4095, 8255,16383,32906,65535,131327,262143,524815, 1048575,2098175,4194303,8390691,16777215,33558527, 67108863,134225983,268435455,536887295,1073741823, 2147516554,4294967295,8590000127,17179869183] |