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A174204 as a simple table

na(n)
00
11
21
32
41
51
61
74
81
92
101
112
125
131
143
154
161
171
181
194
205
212
223
234
245
252
263
276
285
293
303
318

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