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A144260 as a simple table

na(n)
11
21
31
44
52
61
71
81
916
101
118
121
131
144
151
1616
172
181
19256
201
211
221
23128
244
251
261
271
281

[1,1,1,4,2,1,1,1,16,1,8,1,1,4,1,16,2,1,256,1,1,1,
 128,4,1,1,1,1]