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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 1 |
| 7 | 2 |
| 8 | 4 |
| 9 | 8 |
| 10 | 16 |
| 11 | 32 |
| 12 | 63 |
| 13 | 125 |
| 14 | 248 |
| 15 | 492 |
| 16 | 976 |
| 17 | 1936 |
| 18 | 3840 |
| 19 | 7617 |
| 20 | 15109 |
| 21 | 29970 |
| 22 | 59448 |
| 23 | 117920 |
| 24 | 233904 |
| 25 | 463968 |
| 26 | 920319 |
| 27 | 1825529 |
| 28 | 3621088 |
| 29 | 7182728 |
| 30 | 14247536 |
| 31 | 28261168 |
| 32 | 56058368 |
| 33 | 111196417 |
| 34 | 220567305 |
| 35 | 437513522 |
| 36 | 867844316 |
| 37 | 1721441096 |
| 38 | 3414621024 |
[0,0,0,0,0,1,1,2,4,8,16,32,63,125,248,492,976, 1936,3840,7617,15109,29970,59448,117920,233904, 463968,920319,1825529,3621088,7182728,14247536, 28261168,56058368,111196417,220567305,437513522, 867844316,1721441096,3414621024] |