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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 6 |
| 3 | 8 |
| 4 | 20 |
| 5 | 48 |
| 6 | 104 |
| 7 | 160 |
| 8 | 304 |
| 9 | 832 |
| 10 | 1056 |
| 11 | 3584 |
| 12 | 4544 |
| 13 | 13312 |
| 14 | 24192 |
| 15 | 51200 |
| 16 | 111360 |
| 17 | 239616 |
| 18 | 446976 |
| 19 | 954368 |
| 20 | 1784832 |
| 21 | 3866624 |
| 22 | 7235584 |
| 23 | 15335424 |
| 24 | 28651520 |
| 25 | 59703296 |
| 26 | 110960640 |
| 27 | 259784704 |
| 28 | 467386368 |
| 29 | 954728448 |
| 30 | 1845919744 |
| 31 | 3753902080 |
| 32 | 7459766272 |
[1,2,6,8,20,48,104,160,304,832,1056,3584,4544, 13312,24192,51200,111360,239616,446976,954368, 1784832,3866624,7235584,15335424,28651520, 59703296,110960640,259784704,467386368,954728448, 1845919744,3753902080,7459766272] |