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A028476 as a simple table

na(n)
12
22
36
46
512
66
718
812
918
1012
1122
1212
1342
1418
1530
1630
1760
1818
1954
2030
2142
2222
2346
2430
2566
2642
2754
2842
2958
3030
3162
3260
3366
3460
3590
3642
37126
3854
3990
4060
41150
4242
4398
4466
4590
4646
4794
4860
4998
5066
51120
5290
53106
5454
55150
5690
57126
5858
59118
6060
61198
6262
63126
64120
65210
6666
67134

[2,2,6,6,12,6,18,12,18,12,22,12,42,18,30,30,60,18,
 54,30,42,22,46,30,66,42,54,42,58,30,62,60,66,60,
 90,42,126,54,90,60,150,42,98,66,90,46,94,60,98,66,
 120,90,106,54,150,90,126,58,118,60,198,62,126,120,
 210,66,134]