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A253242 as a simple table

na(n)
20
30
40
50
60
72
8-1
90
100
111
120
130
141
151
160
172
180
191
201
210
220
232
241
250
261
27-1
280
291
300

[0,0,0,0,0,2,-1,0,0,1,0,0,1,1,0,2,0,1,1,0,0,2,1,0,
 1,-1,0,1,0]