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A186647 as a simple table

na(n)
12
212
314
416
520
630
732
834
938
1050
1152
1256
1358
1470
1574
1676
1792
1894
1998
20102
21104
22106
23110
24120
25122
26124
27128
28140
29142
30146
31148
32160
33164
34166
35182
36184
37188
38200
39210
40212
41214
42218
43230
44232

[2,12,14,16,20,30,32,34,38,50,52,56,58,70,74,76,
 92,94,98,102,104,106,110,120,122,124,128,140,142,
 146,148,160,164,166,182,184,188,200,210,212,214,
 218,230,232]