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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 16 |
| 5 | 48 |
| 6 | 144 |
| 7 | 352 |
| 8 | 896 |
| 9 | 2432 |
| 10 | 7168 |
| 11 | 16896 |
| 12 | 46080 |
| 13 | 114688 |
| 14 | 303104 |
| 15 | 843776 |
| 16 | 2080768 |
| 17 | 5308416 |
| 18 | 13762560 |
| 19 | 34865152 |
| 20 | 87818240 |
| 21 | 241172480 |
| 22 | 583008256 |
| 23 | 1503657984 |
| 24 | 3762290688 |
| 25 | 9604956160 |
| 26 | 23689428992 |
| 27 | 60532195328 |
| 28 | 156397207552 |
| 29 | 385137770496 |
| 30 | 967978254336 |
[1,1,2,8,16,48,144,352,896,2432,7168,16896,46080, 114688,303104,843776,2080768,5308416,13762560, 34865152,87818240,241172480,583008256,1503657984, 3762290688,9604956160,23689428992,60532195328, 156397207552,385137770496,967978254336] |