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A075647 as a simple table

na(n)
12
21
38
43
54
69
75
86
912
1032
117
1210
1315
1416
1530
1611
1714
1818
1920
2025
2124
2213
2322
2421
2528
2635
2736
2877
2917
3026
3127
3240
3345
3442
3549
3696
3719
3834
3933
4044
4150
4248
4356
4464
4572
4623
4738
4839
4952
5055
5154
5263
5380
5481
55120
5629
5746
5851
5960
6065
6166
6270
6388
6490
65100
66187
6731
6858
6957
7068
7175
7278

[2,1,8,3,4,9,5,6,12,32,7,10,15,16,30,11,14,18,20,
 25,24,13,22,21,28,35,36,77,17,26,27,40,45,42,49,
 96,19,34,33,44,50,48,56,64,72,23,38,39,52,55,54,
 63,80,81,120,29,46,51,60,65,66,70,88,90,100,187,
 31,58,57,68,75,78]