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A326478 as a simple table

na(n)
11
21
31
44
51
66
71
88
93
1010
111
1212
131
1414
155
1616
171
1818
191
2020
217
2222
231
2424
255
2626
279
2828
291
3030
311
3232
3311
3434
3535
3636
371
3838
3913
4040
411
4242
431
4444
453
4646
471
4848
497
5050
5117
5252
531
5454
5555
5656
5719
5858
591
6060
611
6262
6321
6464
6513
6666
671
6868
6923
7070
711
7272
731

[1,1,1,4,1,6,1,8,3,10,1,12,1,14,5,16,1,18,1,20,7,
 22,1,24,5,26,9,28,1,30,1,32,11,34,35,36,1,38,13,
 40,1,42,1,44,3,46,1,48,7,50,17,52,1,54,55,56,19,
 58,1,60,1,62,21,64,13,66,1,68,23,70,1,72,1]