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A250310 as a simple table

na(n)
12
24
38
410
514
620
722
826
932
1034
1140
1244
1346
1452
1556
1658
1764
1868
1974
2080
2186
2288
2392
2494
2598
26100
27110
28112
29118
30124
31128
32130
33134
34136
35140
36142
37146
38148
39152
40158
41164
42172
43178
44184
45190
46194
47202
48206
49208
50212
51218
52220
53230
54238
55242
56244
57250
58254
59256
60266
61268
62274
63278
64290
65296
66298

[2,4,8,10,14,20,22,26,32,34,40,44,46,52,56,58,64,
 68,74,80,86,88,92,94,98,100,110,112,118,124,128,
 130,134,136,140,142,146,148,152,158,164,172,178,
 184,190,194,202,206,208,212,218,220,230,238,242,
 244,250,254,256,266,268,274,278,290,296,298]