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A258663 as a simple table

na(n)
12
26
38
410
512
620
722
826
928
1030
1140
1248
1350
1452
1556
1658
1762
1866
1972
2076
2178
2280
2386
2490
2592
2696
2798
28106
29108
30118
31122
32128
33132
34136
35140
36142
37152
38160
39166
40168
41176
42178
43180
44182
45190
46208
47210
48212
49220
50222
51230
52232
53238
54246
55252
56260

[2,6,8,10,12,20,22,26,28,30,40,48,50,52,56,58,62,
 66,72,76,78,80,86,90,92,96,98,106,108,118,122,128,
 132,136,140,142,152,160,166,168,176,178,180,182,
 190,208,210,212,220,222,230,232,238,246,252,260]