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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 15 |
| 4 | 28 |
| 5 | 60 |
| 6 | 124 |
| 7 | 252 |
| 8 | 496 |
| 9 | 1008 |
| 10 | 2032 |
| 11 | 4080 |
| 12 | 8176 |
| 13 | 16368 |
| 14 | 32752 |
| 15 | 65520 |
| 16 | 130816 |
| 17 | 261888 |
| 18 | 524032 |
| 19 | 1048320 |
| 20 | 2096896 |
| 21 | 4194048 |
| 22 | 8388352 |
| 23 | 16776960 |
| 24 | 33554176 |
| 25 | 67108608 |
| 26 | 134217472 |
| 27 | 268435200 |
| 28 | 536870656 |
| 29 | 1073741568 |
| 30 | 2147483392 |
| 31 | 4294967040 |
| 32 | 8589869056 |
[1,2,7,15,28,60,124,252,496,1008,2032,4080,8176, 16368,32752,65520,130816,261888,524032,1048320, 2096896,4194048,8388352,16776960,33554176, 67108608,134217472,268435200,536870656,1073741568, 2147483392,4294967040,8589869056] |