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A156193 as a simple table

na(n)
01
1-3
2-10
3207
4590
5-10443
6-87730
78725719
824386030
9-779929533
10-10896056050
11851890629837
127140660673070
13-329895072654423
14-6452172716731570
152751576311657256183
167688003030273049710
17-464469099846794359113
18-11679689713099591922290

[1,-3,-10,207,590,-10443,-87730,8725719,24386030,
 -779929533,-10896056050,851890629837,
 7140660673070,-329895072654423,-6452172716731570,
 2751576311657256183,7688003030273049710,
 -464469099846794359113,-11679689713099591922290]