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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 8 |
| 7 | 16 |
| 8 | 34 |
| 9 | 76 |
| 10 | 168 |
| 11 | 368 |
| 12 | 838 |
| 13 | 1964 |
| 14 | 4544 |
| 15 | 10464 |
| 16 | 24658 |
| 17 | 58984 |
| 18 | 140072 |
| 19 | 331456 |
| 20 | 795834 |
| 21 | 1932228 |
| 22 | 4665304 |
| 23 | 11227280 |
| 24 | 27305882 |
| 25 | 66953236 |
| 26 | 163418448 |
| 27 | 397826496 |
| 28 | 976658846 |
| 29 | 2412163316 |
| 30 | 5935476672 |
| 31 | 14576596320 |
| 32 | 36023097266 |
| 33 | 89458468968 |
[1,1,1,2,4,8,16,34,76,168,368,838,1964,4544,10464, 24658,58984,140072,331456,795834,1932228,4665304, 11227280,27305882,66953236,163418448,397826496, 976658846,2412163316,5935476672,14576596320, 36023097266,89458468968] |