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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | -1 |
| 4 | 2 |
| 5 | 2 |
| 6 | -2 |
| 7 | 41 |
| 8 | 13 |
| 9 | 3 |
| 10 | -3 |
| 11 | 30 |
| 12 | 90 |
| 13 | 24 |
| 14 | 4 |
| 15 | -4 |
| 16 | 501 |
| 17 | 209 |
| 18 | 139 |
| 19 | 35 |
| 20 | 5 |
| 21 | -5 |
| 22 | 322 |
| 23 | 1102 |
| 24 | 388 |
| 25 | 188 |
| 26 | 46 |
| 27 | 6 |
| 28 | -6 |
| 29 | 5041 |
| 30 | 2253 |
| 31 | 1703 |
| 32 | 567 |
| 33 | 237 |
| 34 | 57 |
| 35 | 7 |
| 36 | -7 |
| 37 | 3110 |
| 38 | 11090 |
| 39 | 4184 |
| 40 | 2304 |
| 41 | 746 |
| 42 | 286 |
| 43 | 68 |
| 44 | 8 |
| 45 | -8 |
| 46 | 47501 |
| 47 | 21769 |
| 48 | 17139 |
| 49 | 6115 |
| 50 | 2905 |
| 51 | 925 |
| 52 | 335 |
| 53 | 79 |
| 54 | 9 |
| 55 | -9 |
[0,1,-1,2,2,-2,41,13,3,-3,30,90,24,4,-4,501,209, 139,35,5,-5,322,1102,388,188,46,6,-6,5041,2253, 1703,567,237,57,7,-7,3110,11090,4184,2304,746,286, 68,8,-8,47501,21769,17139,6115,2905,925,335,79,9, -9] |