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A111839 as a simple table

na(n)
00
11
2-6
3142
431800
5-159468264
6-2481298801008
71414130111428687344
81827317023092830201950080
9-89946874545119714361987192509568
10-9262235489215916508714844705185660161280

[0,1,-6,142,31800,-159468264,-2481298801008,
 1414130111428687344,1827317023092830201950080,
 -89946874545119714361987192509568,
 -9262235489215916508714844705185660161280]