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A145577 as a simple table

na(n)
00
15
27
36
42
54
63
78
81
90
105
117
126
132
144
153
168
171
180
195
207
216
222
234
243
258
261
270
285
297
306
312
324
333
348
351

[0,5,7,6,2,4,3,8,1,0,5,7,6,2,4,3,8,1,0,5,7,6,2,4,
 3,8,1,0,5,7,6,2,4,3,8,1]