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A331681 as a simple table

na(n)
11
22
34
46
58
612
714
816
924
1026
1128
1232
1338
1448
1552
1656
1764
1874
1976
2086
2196
22104
23106
24112
25128
26148
27152
28172
29178
30192
31202
32208
33212
34214
35224
36256
37262
38296
39304
40326
41344
42356
43384
44404
45416
46424
47428
48446
49448
50478
51512
52524
53526
54592
55608
56622
57652

[1,2,4,6,8,12,14,16,24,26,28,32,38,48,52,56,64,74,
 76,86,96,104,106,112,128,148,152,172,178,192,202,
 208,212,214,224,256,262,296,304,326,344,356,384,
 404,416,424,428,446,448,478,512,524,526,592,608,
 622,652]