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A138862 as a simple table

na(n)
13
27
331
412
581
613
752
821
923
1061
1116
1217
1368
1453
1510
1614
1744
1825
1919
2028
2147
2234
2328
2443
2544
2640
2785
2853
2952
3051
3174
3217
3312
3441
3581
3662
3712
3843
3992
4012
4129
4212
4331
4412
4520
4616
4731

[3,7,31,12,81,13,52,21,23,61,16,17,68,53,10,14,44,
 25,19,28,47,34,28,43,44,40,85,53,52,51,74,17,12,
 41,81,62,12,43,92,12,29,12,31,12,20,16,31]