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A214747 as a simple table

na(n)
21
31
41
51
63
73
81
93
103
119
126
139
147
153
168
1715
189
1917
2010
217
2211
237
2412
2515
2613
279
2814
2925
3015
3115
3216
3311
3417
3521
3613
3733
3819
3913
4011
4139
4221
4341
4422
459
4623
4715
481
4935
503
5117
5226
5349
5411
5511
5628
5719
5829
5957
601
6157
623
637
6432
6539
6633
6765
6834
6923
7011
7155
7236
7371
7437
7525

[1,1,1,1,3,3,1,3,3,9,6,9,7,3,8,15,9,17,10,7,11,7,
 12,15,13,9,14,25,15,15,16,11,17,21,13,33,19,13,11,
 39,21,41,22,9,23,15,1,35,3,17,26,49,11,11,28,19,
 29,57,1,57,3,7,32,39,33,65,34,23,11,55,36,71,37,
 25]