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A306719 as a simple table

na(n)
12
24
38
410
520
622
728
830
950
1058
1164
1272
1380
1482
1588
16108
17114
18134
19148
20172
21190
22204
23214
24230
25238
26244
27262
28272
29312
30322
31340
32344
33360
34362
35400
36410
37422
38442
39458
40498
41514
42552
43554
44568
45594
46610
47620
48640
49688
50712
51730
52750
53758
54784
55792
56814

[2,4,8,10,20,22,28,30,50,58,64,72,80,82,88,108,
 114,134,148,172,190,204,214,230,238,244,262,272,
 312,322,340,344,360,362,400,410,422,442,458,498,
 514,552,554,568,594,610,620,640,688,712,730,750,
 758,784,792,814]