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A228591型作为一个简单的表

n个a(n)
11
20
0
40
50
60
7-1
81
90
100
110
120
130
140
150
161
171
18-1
19-9
2081
219
22-1225
23-2500
242500
252500
26-225
27-121
28841
2919044
30-29584
31-355216
321527696
33141376
34-40000
35-40000
3610000
3759536
38-258064
39-139876
40935089
41885481
42-16384
43-1876900
441710864
45818875456
46-22896531856
47-23799232900
4866328911936
49158281561
50-45320023225

[1,0,0,0,0,0,-1,1,0,0,0,0,0,0,0,1,1,-1,-9,81,9,-1225,-2500,2500,2500,-225,-121,841,19044,-29584,-355216,1527696,141376,-40000,-40000,10000,59536,-258064,-139876,935089,885481,-16384,-1876900,1710864,818875456,-22896531856,-23799232900,66328911936,158281561,-45320023225]