| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 6 |
| 3 | 12 |
| 4 | 28 |
| 5 | 40 |
| 6 | 120 |
| 7 | 240 |
| 8 | 496 |
| 9 | 928 |
| 10 | 2016 |
| 11 | 3520 |
| 12 | 8128 |
| 13 | 10880 |
| 14 | 32640 |
| 15 | 65280 |
| 16 | 130816 |
| 17 | 260608 |
| 18 | 523776 |
| 19 | 1039360 |
| 20 | 2096128 |
| 21 | 4106240 |
| 22 | 8386560 |
| 23 | 16248832 |
| 24 | 33550336 |
| 25 | 61841408 |
| 26 | 134209536 |
| 27 | 232636416 |
| 28 | 536854528 |
| 29 | 715816960 |
| 30 | 2147450880 |
| 31 | 4294901760 |
| 32 | 8589869056 |
[1,2,6,12,28,40,120,240,496,928,2016,3520,8128, 10880,32640,65280,130816,260608,523776,1039360, 2096128,4106240,8386560,16248832,33550336, 61841408,134209536,232636416,536854528,715816960, 2147450880,4294901760,8589869056] |