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A175786 as a simple table

na(n)
18
212
320
430
532
644
748
850
954
1064
1166
1268
1372
1475
1580
1681
1792
1896
19102
20108
21110
22112
23116
24120
25125
26128
27138
28160
29162
30164
31165
32168
33170
34174
35180
36188
37192
38208
39212
40230
41236
42240
43242
44243
45246
46252
47255
48270
49272
50275
51280
52282
53284
54288
55290
56304

[8,12,20,30,32,44,48,50,54,64,66,68,72,75,80,81,
 92,96,102,108,110,112,116,120,125,128,138,160,162,
 164,165,168,170,174,180,188,192,208,212,230,236,
 240,242,243,246,252,255,270,272,275,280,282,284,
 288,290,304]