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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 15 |
| 4 | 25 |
| 5 | 63 |
| 6 | 112 |
| 7 | 255 |
| 8 | 480 |
| 9 | 1023 |
| 10 | 1999 |
| 11 | 4095 |
| 12 | 8064 |
| 13 | 16383 |
| 14 | 32512 |
| 15 | 65535 |
| 16 | 130560 |
| 17 | 262143 |
| 18 | 523488 |
| 19 | 1048575 |
| 20 | 2095104 |
| 21 | 4194303 |
| 22 | 8384576 |
| 23 | 16777215 |
| 24 | 33546240 |
| 25 | 67108863 |
| 26 | 134201344 |
| 27 | 268435455 |
| 28 | 536838176 |
| 29 | 1073741823 |
| 30 | 2147418160 |
| 31 | 4294967295 |
| 32 | 8589803776 |
[1,2,5,15,25,63,112,255,480,1023,1999,4095,8064, 16383,32512,65535,130560,262143,523488,1048575, 2095104,4194303,8384576,16777215,33546240, 67108863,134201344,268435455,536838176,1073741823, 2147418160,4294967295,8589803776] |