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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 4 |
| 7 | 10 |
| 8 | 18 |
| 9 | 37 |
| 10 | 71 |
| 11 | 146 |
| 12 | 285 |
| 13 | 577 |
| 14 | 1143 |
| 15 | 2293 |
| 16 | 4570 |
| 17 | 9160 |
| 18 | 18277 |
| 19 | 36597 |
| 20 | 73118 |
| 21 | 146301 |
| 22 | 292466 |
| 23 | 585079 |
| 24 | 1169848 |
| 25 | 2340003 |
| 26 | 4679431 |
| 27 | 9359402 |
| 28 | 18717687 |
| 29 | 37436529 |
| 30 | 74870685 |
| 31 | 149743743 |
| 32 | 299482896 |
| 33 | 598970235 |
| 34 | 1197931456 |
| 35 | 2395872060 |
| 36 | 4791725527 |
| 37 | 9583469660 |
| 38 | 19166902722 |
[1,1,1,1,3,4,10,18,37,71,146,285,577,1143,2293, 4570,9160,18277,36597,73118,146301,292466,585079, 1169848,2340003,4679431,9359402,18717687,37436529, 74870685,149743743,299482896,598970235,1197931456, 2395872060,4791725527,9583469660,19166902722] |