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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 2 |
| 3 | 8 |
| 4 | 6 |
| 5 | 16 |
| 6 | 40 |
| 7 | 88 |
| 8 | 158 |
| 9 | 384 |
| 10 | 416 |
| 11 | 704 |
| 12 | 1688 |
| 13 | 2896 |
| 14 | 8680 |
| 15 | 14128 |
| 16 | 28942 |
| 17 | 65152 |
| 18 | 111200 |
| 19 | 231504 |
| 20 | 438736 |
| 21 | 942480 |
| 22 | 1772016 |
| 23 | 4320464 |
| 24 | 7173432 |
| 25 | 18279648 |
| 26 | 29516976 |
| 27 | 66594368 |
| 28 | 125302232 |
| 29 | 258582272 |
| 30 | 502725168 |
| 31 | 1009023808 |
| 32 | 2156547822 |
| 33 | 3961342464 |
| 34 | 8844419136 |
| 35 | 17224261808 |
| 36 | 34931449264 |
| 37 | 71168739072 |
| 38 | 138318974000 |
| 39 | 307489703840 |
[1,2,2,8,6,16,40,88,158,384,416,704,1688,2896, 8680,14128,28942,65152,111200,231504,438736, 942480,1772016,4320464,7173432,18279648,29516976, 66594368,125302232,258582272,502725168,1009023808, 2156547822,3961342464,8844419136,17224261808, 34931449264,71168739072,138318974000,307489703840] |