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A257340 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1213
1312
1417
1515
1614
1719
1816
1923
2018
2125
2222
2321
2420
2527
2626
2729
2824
2931
3035
3132
3237
3328
3441
3533
3634
3739
3840
3943
4030
4147
4236
4349
4438
4545
4644
4751
4846
4953
5042
5155
5248
5359
5450
5557
5661
5752
5863
5958
6065
6154
6267
6369
6456
6571
6662
6773

[1,2,3,4,5,6,7,8,9,10,11,13,12,17,15,14,19,16,23,
 18,25,22,21,20,27,26,29,24,31,35,32,37,28,41,33,
 34,39,40,43,30,47,36,49,38,45,44,51,46,53,42,55,
 48,59,50,57,61,52,63,58,65,54,67,69,56,71,62,73]