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A218897 as a simple table

na(n)
12
22
34
44
56
68
76
818
916
1016
1110
1234
1372
1438
1532
1616
1786
18212
19286
2098
2164
2226
23180
24786
251096
261162
27244
28128
2942
30426
312594
326280
336422
344700
35614
36256
3768
38930
399110
4028598
4154726
4235812
4319046
441542
45512
46110
472140
4831062
49149238
50373612
51463746
52202662

[2,2,4,4,6,8,6,18,16,16,10,34,72,38,32,16,86,212,
 286,98,64,26,180,786,1096,1162,244,128,42,426,
 2594,6280,6422,4700,614,256,68,930,9110,28598,
 54726,35812,19046,1542,512,110,2140,31062,149238,
 373612,463746,202662]