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A123574 as a simple table

na(n)
00
15
29
312
414
515
615
719
822
924
1025
1125
1228
1330
1431
1531
1633
1734
1834
1935
2035
2135
2239
2342
2444
2545
2645
2748
2850
2951
3051
3153
3254
3354
3455
3555
3655
3758
3860
3961
4061
4163
4264
4364
4465
4565
4665
4767
4868
4968
5069
5169
5269
5370
5470
5570
5670
5774
5877
5979
6080
6180
6283
6385
6486
6586
6688
6789
6889
6990

[0,5,9,12,14,15,15,19,22,24,25,25,28,30,31,31,33,
 34,34,35,35,35,39,42,44,45,45,48,50,51,51,53,54,
 54,55,55,55,58,60,61,61,63,64,64,65,65,65,67,68,
 68,69,69,69,70,70,70,70,74,77,79,80,80,83,85,86,
 86,88,89,89,90]