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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 30 |
| 3 | 80 |
| 4 | 197 |
| 5 | 472 |
| 6 | 1046 |
| 7 | 2160 |
| 8 | 4306 |
| 9 | 8360 |
| 10 | 15712 |
| 11 | 28656 |
| 12 | 51127 |
| 13 | 89552 |
| 14 | 153926 |
| 15 | 259904 |
| 16 | 432336 |
| 17 | 709728 |
| 18 | 1150142 |
| 19 | 1841200 |
| 20 | 2915546 |
| 21 | 4570904 |
| 22 | 7097622 |
| 23 | 10921184 |
| 24 | 16664073 |
| 25 | 25228176 |
| 26 | 37907758 |
| 27 | 56553936 |
| 28 | 83806768 |
| 29 | 123405752 |
| 30 | 180611558 |
| 31 | 262799248 |
| 32 | 380275604 |
[1,8,30,80,197,472,1046,2160,4306,8360,15712, 28656,51127,89552,153926,259904,432336,709728, 1150142,1841200,2915546,4570904,7097622,10921184, 16664073,25228176,37907758,56553936,83806768, 123405752,180611558,262799248,380275604] |