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A066958 as a simple table

na(n)
10
20
31
40
53
60
73
83
93
100
119
120
133
146
156
163
179
180
199
206
216
220
2315
246
253
2612
279
280
2915
300
3115
329
336
346
3518
366
373
3812
3918
406
4121
420
439
4412
456
466
4727
486
499
5012
5118
526
5315
5412
5518
5618
576
580
5933
600
6115
6218
6318
649
6518
6612
679
6818
6918
700
7139
726
739
7424
7518
7612
7718
780
7927
8018
8115
826
8333
8412
856
8624
8730

[0,0,1,0,3,0,3,3,3,0,9,0,3,6,6,3,9,0,9,6,6,0,15,6,
 3,12,9,0,15,0,15,9,6,6,18,6,3,12,18,6,21,0,9,12,6,
 6,27,6,9,12,18,6,15,12,18,18,6,0,33,0,15,18,18,9,
 18,12,9,18,18,0,39,6,9,24,18,12,18,0,27,18,15,6,
 33,12,6,24,30]