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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 2 |
| 8 | 2 |
| 9 | 4 |
| 10 | 4 |
| 11 | 7 |
| 12 | 9 |
| 13 | 12 |
| 14 | 17 |
| 15 | 23 |
| 16 | 32 |
| 17 | 44 |
| 18 | 60 |
| 19 | 83 |
| 20 | 113 |
| 21 | 156 |
| 22 | 214 |
| 23 | 294 |
| 24 | 403 |
| 25 | 554 |
| 26 | 760 |
| 27 | 1044 |
| 28 | 1433 |
| 29 | 1967 |
| 30 | 2701 |
| 31 | 3708 |
| 32 | 5091 |
| 33 | 6988 |
| 34 | 9596 |
| 35 | 13172 |
| 36 | 18085 |
| 37 | 24828 |
| 38 | 34086 |
| 39 | 46797 |
| 40 | 64246 |
| 41 | 88203 |
| 42 | 121092 |
| 43 | 166246 |
| 44 | 228237 |
| 45 | 313343 |
| 46 | 430185 |
| 47 | 590594 |
| 48 | 810819 |
[1,-1,1,0,1,1,1,2,2,4,4,7,9,12,17,23,32,44,60,83, 113,156,214,294,403,554,760,1044,1433,1967,2701, 3708,5091,6988,9596,13172,18085,24828,34086,46797, 64246,88203,121092,166246,228237,313343,430185, 590594,810819] |