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A325283 as a simple table

na(n)
12
24
36
412
518
620
724
828
940
1048
1160
1284
1390
14120
15126
16132
17140
18150
19156
20168
21180
22198
23204
24220
25228
26234
27240
28252
29260
30264
31270
32276
33280

[2,4,6,12,18,20,24,28,40,48,60,84,90,120,126,132,
 140,150,156,168,180,198,204,220,228,234,240,252,
 260,264,270,276,280]