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A068207 as a simple table

na(n)
12
26
340
454
566
670
778
880
988
10110
11114
12128
13130
14182
15216
16222
17238
18250
19258
20276
21310
22318
23354
24366
25384
26402
27410
28418
29438
30456
31488
32498
33552
34594
35598
36616
37624
38632
39654
40678
41680
42682
43696
44726
45760
46762
47774
48786
49808
50830
51870
52906
53924
54928

[2,6,40,54,66,70,78,80,88,110,114,128,130,182,216,
 222,238,250,258,276,310,318,354,366,384,402,410,
 418,438,456,488,498,552,594,598,616,624,632,654,
 678,680,682,696,726,760,762,774,786,808,830,870,
 906,924,928]