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A078578 as a simple table

na(n)
12
22
34
46
58
612
716
824
932
1036
1144
1240
1348
1464
1560
1672
1764
1872
1992
2096
21112
2296
23144
24120
25168
26144
27160
28204
29212
30160
31216
32272
33264
34240
35252
36256
37336
38240
39348
40288
41384
42320
43420
44336
45360
46320
47384
48440
49432
50480
51528
52432
53552
54564
55480
56592
57576
58624

[2,2,4,6,8,12,16,24,32,36,44,40,48,64,60,72,64,72,
 92,96,112,96,144,120,168,144,160,204,212,160,216,
 272,264,240,252,256,336,240,348,288,384,320,420,
 336,360,320,384,440,432,480,528,432,552,564,480,
 592,576,624]