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A331471 as a simple table

na(n)
00
11
21
33
41
55
63
77
81
99
105
116
123
136
147
1515
161
1717
189
1910
205
2121
227
238
243
2510
266
2727
287
298
3015
3131
321
3333
3417
3518
369
3710
3810
3912
405
4110
4221
4322
447
4545
4615
4716
483
4918
5010
5151
526
5322
5427
5528
567
5712
589
5928
6015
6116
6231
6363
641
6565
6633
6734
6817
6918
7018
7120
729
7373

[0,1,1,3,1,5,3,7,1,9,5,6,3,6,7,15,1,17,9,10,5,21,
 7,8,3,10,6,27,7,8,15,31,1,33,17,18,9,10,10,12,5,
 10,21,22,7,45,15,16,3,18,10,51,6,22,27,28,7,12,9,
 28,15,16,31,63,1,65,33,34,17,18,18,20,9,73]