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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 6 |
| 3 | 12 |
| 4 | 28 |
| 5 | 56 |
| 6 | 120 |
| 7 | 240 |
| 8 | 496 |
| 9 | 992 |
| 10 | 2016 |
| 11 | 4032 |
| 12 | 8128 |
| 13 | 16256 |
| 14 | 32640 |
| 15 | 65280 |
| 16 | 130816 |
| 17 | 261632 |
| 18 | 523776 |
| 19 | 1047552 |
| 20 | 2096128 |
| 21 | 4192256 |
| 22 | 8386560 |
| 23 | 16773120 |
| 24 | 33550336 |
| 25 | 67100672 |
| 26 | 134209536 |
| 27 | 268419072 |
| 28 | 536854528 |
| 29 | 1073709056 |
| 30 | 2147450880 |
| 31 | 4294901760 |
| 32 | 8589869056 |
[1,2,6,12,28,56,120,240,496,992,2016,4032,8128, 16256,32640,65280,130816,261632,523776,1047552, 2096128,4192256,8386560,16773120,33550336, 67100672,134209536,268419072,536854528,1073709056, 2147450880,4294901760,8589869056] |