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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 6 |
| 3 | 15 |
| 4 | 31 |
| 5 | 60 |
| 6 | 124 |
| 7 | 252 |
| 8 | 508 |
| 9 | 1008 |
| 10 | 2032 |
| 11 | 4080 |
| 12 | 8176 |
| 13 | 16368 |
| 14 | 32752 |
| 15 | 65520 |
| 16 | 131056 |
| 17 | 262000 |
| 18 | 524144 |
| 19 | 1048560 |
| 20 | 2097136 |
| 21 | 4194160 |
| 22 | 8388464 |
| 23 | 16777200 |
| 24 | 33554416 |
| 25 | 67108272 |
| 26 | 134217136 |
| 27 | 268435440 |
| 28 | 536870896 |
| 29 | 1073739696 |
| 30 | 2147481520 |
| 31 | 4294966864 |
| 32 | 8589934160 |
[1,2,6,15,31,60,124,252,508,1008,2032,4080,8176, 16368,32752,65520,131056,262000,524144,1048560, 2097136,4194160,8388464,16777200,33554416, 67108272,134217136,268435440,536870896,1073739696, 2147481520,4294966864,8589934160] |