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A193332 as a simple table

na(n)
11
22
3-3
452
5-1315
650286
7-2655863
8183322952
9-15928677063
101695597280570
11-216636191518219
1232688113040335292
13-5749136647259226923
141165789270581830003942
15-270019628802455686919295
1670862777375461690495134736
17-20921819854506620454336189583

[1,2,-3,52,-1315,50286,-2655863,183322952,
 -15928677063,1695597280570,-216636191518219,
 32688113040335292,-5749136647259226923,
 1165789270581830003942,-270019628802455686919295,
 70862777375461690495134736,
 -20921819854506620454336189583]