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A124154 as a simple table

na(n)
12
24
38
420
522
632
736
850
954
1062
1164
1272
1378
1484
1586
1690
1792
1894
1996
2098
21112
22124
23134
24144
25146
26216
27224
28238
29240
30246
31250
32256
33262
34276
35294
36296
37298
38300
39314
40334
41370
42378
43382
44392
45400
46402
47406
48420
49430
50450
51472
52480
53482
54494
55510
56512
57526

[2,4,8,20,22,32,36,50,54,62,64,72,78,84,86,90,92,
 94,96,98,112,124,134,144,146,216,224,238,240,246,
 250,256,262,276,294,296,298,300,314,334,370,378,
 382,392,400,402,406,420,430,450,472,480,482,494,
 510,512,526]