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A052182 as a simple table

na(n)
11
2-3
318
4-160
51875
6-27216
7470596
8-9437184
9215233605
10-5500000000
11155624547606
12-4829554409472
13163086595857367
14-5952860799406080
15233543408203125000
16-9799832789158199296
17437950726881001816329
18-20766159817517617053696
191041273502979112415328410

[1,-3,18,-160,1875,-27216,470596,-9437184,
 215233605,-5500000000,155624547606,-4829554409472,
 163086595857367,-5952860799406080,
 233543408203125000,-9799832789158199296,
 437950726881001816329,-20766159817517617053696,
 1041273502979112415328410]