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A055388 as a simple table

na(n)
12
22
34
46
56
610
712
84
98
1018
116
1222
1320
1418
1528
1610
1710
1812
1936
2012
2120
2214
2312
2446
2542
268
2752
2820
2918
3058
3160
326
3312
3466
3522
3670
3718
3820
3930
4078
4154
4282
438
4428
4522
4612
4710
4836
4948
5030
51100
52102
5312
54106
5536
5636
5728
5844
5912
6024
61110
6220
63100
6414
6514
66130
6718

[2,2,4,6,6,10,12,4,8,18,6,22,20,18,28,10,10,12,36,
 12,20,14,12,46,42,8,52,20,18,58,60,6,12,66,22,70,
 18,20,30,78,54,82,8,28,22,12,10,36,48,30,100,102,
 12,106,36,36,28,44,12,24,110,20,100,14,14,130,18]