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| n | a(n) |
|---|---|
| 1 | 112 |
| 2 | 404 |
| 3 | 1264 |
| 4 | 4568 |
| 5 | 14368 |
| 6 | 52016 |
| 7 | 164416 |
| 8 | 596192 |
| 9 | 1892992 |
| 10 | 6874304 |
| 11 | 21915904 |
| 12 | 79691648 |
| 13 | 254990848 |
| 14 | 928299776 |
| 15 | 2979890176 |
| 16 | 10859597312 |
| 17 | 34958682112 |
| 18 | 127515167744 |
| 19 | 411504185344 |
| 20 | 1502182012928 |
| 21 | 4858050224128 |
| 22 | 17746184155136 |
[112,404,1264,4568,14368,52016,164416,596192, 1892992,6874304,21915904,79691648,254990848, 928299776,2979890176,10859597312,34958682112, 127515167744,411504185344,1502182012928, 4858050224128,17746184155136] |