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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -1 |
| 3 | 1 |
| 4 | 2 |
| 5 | -1 |
| 6 | -1 |
| 7 | 4 |
| 8 | 3 |
| 9 | -3 |
| 10 | 2 |
| 11 | 11 |
| 12 | 3 |
| 13 | -4 |
| 14 | 15 |
| 15 | 25 |
| 16 | 2 |
| 17 | 7 |
| 18 | 55 |
| 19 | 52 |
| 20 | 11 |
| 21 | 69 |
| 22 | 162 |
| 23 | 115 |
| 24 | 91 |
| 25 | 300 |
| 26 | 439 |
| 27 | 321 |
| 28 | 482 |
| 29 | 1039 |
| 30 | 1199 |
| 31 | 1124 |
| 32 | 2003 |
| 33 | 3277 |
| 34 | 3522 |
| 35 | 4251 |
| 36 | 7283 |
| 37 | 10076 |
| 38 | 11295 |
| 39 | 15785 |
| 40 | 24642 |
| 41 | 31447 |
| 42 | 38375 |
| 43 | 56212 |
| 44 | 80731 |
| 45 | 101269 |
| 46 | 132962 |
| 47 | 193155 |
| 48 | 262731 |
| 49 | 335500 |
| 50 | 459079 |
| 51 | 649041 |
[1,0,-1,1,2,-1,-1,4,3,-3,2,11,3,-4,15,25,2,7,55, 52,11,69,162,115,91,300,439,321,482,1039,1199, 1124,2003,3277,3522,4251,7283,10076,11295,15785, 24642,31447,38375,56212,80731,101269,132962, 193155,262731,335500,459079,649041] |