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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 6 |
| 3 | 15 |
| 4 | 31 |
| 5 | 60 |
| 6 | 124 |
| 7 | 255 |
| 8 | 511 |
| 9 | 1022 |
| 10 | 2046 |
| 11 | 4082 |
| 12 | 8178 |
| 13 | 16363 |
| 14 | 32747 |
| 15 | 65511 |
| 16 | 131047 |
| 17 | 261915 |
| 18 | 524059 |
| 19 | 1048571 |
| 20 | 2097147 |
| 21 | 4194107 |
| 22 | 8388411 |
| 23 | 16777019 |
| 24 | 33554235 |
| 25 | 67108664 |
| 26 | 134217528 |
| 27 | 268435257 |
| 28 | 536870713 |
| 29 | 1073741685 |
| 30 | 2147483509 |
| 31 | 4294966516 |
| 32 | 8589933812 |
[1,2,6,15,31,60,124,255,511,1022,2046,4082,8178, 16363,32747,65511,131047,261915,524059,1048571, 2097147,4194107,8388411,16777019,33554235, 67108664,134217528,268435257,536870713,1073741685, 2147483509,4294966516,8589933812] |