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A254503 as a simple table

na(n)
11
22
33
42
55
66
77
84
96
1010
1111
126
1313
1414
1515
168
1717
1812
1919
2010
2121
2222
2323
2412
2520
2626
2718
2814
2929
3030
3131
3216
3333
3434
3535
3612
3737
3838
3939
4020
4141
4242
4343
4422
4530
4646
4747
4824
4942
5040
5151
5226
5353
5436
5555
5628
5757
5858
5959
6030
6161
6262
6342
6432
6565
6666
6767
6834
6969
7070

[1,2,3,2,5,6,7,4,6,10,11,6,13,14,15,8,17,12,19,10,
 21,22,23,12,20,26,18,14,29,30,31,16,33,34,35,12,
 37,38,39,20,41,42,43,22,30,46,47,24,42,40,51,26,
 53,36,55,28,57,58,59,30,61,62,42,32,65,66,67,34,
 69,70]