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A291324 as a simple table

na(n)
21
31
42
51
63
71
84
93
105
111
126
133
147
155
168
173
189
193
2010
217
2211
235
2412
255
2613
279
2814
295
3015
315
3216
3311
3417
357
3618
377
3819
3913
4020
417
4221
439
4422
4515
4623
479
4824
499
5025
5117
5226
5311
5427
5511
5628
5719
5829
5911
6030
6111
6231
6321
6432
6515
6633
6713
6834
6923
7035

[1,1,2,1,3,1,4,3,5,1,6,3,7,5,8,3,9,3,10,7,11,5,12,
 5,13,9,14,5,15,5,16,11,17,7,18,7,19,13,20,7,21,9,
 22,15,23,9,24,9,25,17,26,11,27,11,28,19,29,11,30,
 11,31,21,32,15,33,13,34,23,35]