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A247015 as a simple table

na(n)
10
20
31
40
53
60
75
81
94
102
119
120
1311
145
156
162
1715
181
1917
202
2110
229
2321
240
2516
2611
2715
284
2927
301
3129
327
3319
3416
3522
360
3735
3818
3924
404
4139
424
4341
4412
4516
4623
4745
480
4935
5015
5132
5214
5351
547
5537
569
5736
5829
5957
600
6159
6231
6324
6414
6545
669
6765
6822
6944
7013
7169
721
7371

[0,0,1,0,3,0,5,1,4,2,9,0,11,5,6,2,15,1,17,2,10,9,
 21,0,16,11,15,4,27,1,29,7,19,16,22,0,35,18,24,4,
 39,4,41,12,16,23,45,0,35,15,32,14,51,7,37,9,36,29,
 57,0,59,31,24,14,45,9,65,22,44,13,69,1,71]