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A304431 as a simple table

na(n)
00
11
21
31
43
53
63
73
83
94
104
114
124
137
147
157
167
177
187
199
209
219
229
239
249
259
269
2710
2813
2913
3013
3113
3213
3313
3413
3513
3613
3713
3813
3913
4019
4119
4219
4319
4419
4519
4619
4719
4819
4919
5019
5119
5219
5319
5419
5521
5621
5722
5827
5927
6027
6127
6227
6327
6427
6527
6627
6727
6827
6927
7027
7127

[0,1,1,1,3,3,3,3,3,4,4,4,4,7,7,7,7,7,7,9,9,9,9,9,
 9,9,9,10,13,13,13,13,13,13,13,13,13,13,13,13,19,
 19,19,19,19,19,19,19,19,19,19,19,19,19,19,21,21,
 22,27,27,27,27,27,27,27,27,27,27,27,27,27,27]