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A281098 as a simple table

na(n)
00
11
21
33
44
51
63
71
88
93
105
111
1212
131
147
153
1616
171
189
191
2020
213
2211
231
2424
251
2613
273
2828
291
3015
311
3232
333
3417
351
3636
371
3819
393
4040
411
4221
431
4444
453
4623
471
4848
491
5025
513
5252
531
5427
551
5656
573
5829
591
6060
611
6231
633
6464
651
6633
671
6868
693
7035
711
7272
731
7437
753
7676
771
7839
791

[0,1,1,3,4,1,3,1,8,3,5,1,12,1,7,3,16,1,9,1,20,3,
 11,1,24,1,13,3,28,1,15,1,32,3,17,1,36,1,19,3,40,1,
 21,1,44,3,23,1,48,1,25,3,52,1,27,1,56,3,29,1,60,1,
 31,3,64,1,33,1,68,3,35,1,72,1,37,3,76,1,39,1]