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A138673 as a simple table

na(n)
01
11
21
34
45
59
616
79
88
916
1025
1134
1216
1341
1427
1524
1616
1715
1855
1916
2055
2119
2251
232
2462
2516
2650
2716
2838
29109
302
31117
3216
33131
3416
3588
3640
3793
38127
3985
4016
4145
4216
4363
4416
4540
4658
4733
4816

[1,1,1,4,5,9,16,9,8,16,25,34,16,41,27,24,16,15,55,
 16,55,19,51,2,62,16,50,16,38,109,2,117,16,131,16,
 88,40,93,127,85,16,45,16,63,16,40,58,33,16]