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A334289 as a simple table

na(n)
10
20
34
46
56
68
78
822
922
1012
1112
1268
1314
1416
1578
1662
1718
1844
1920
20104
21104
2224
2324
24234
2556
2628
2794
28140
2930
30156
3132
32158
33156
3436
35178
36326
3738
3840
39182
40372
4142
42208
4344
44212
45400
4648
4748
48638
49106
50112
51234
52248
5354
54188
55262
56496
57260
5860
5960
601040

[0,0,4,6,6,8,8,22,22,12,12,68,14,16,78,62,18,44,
 20,104,104,24,24,234,56,28,94,140,30,156,32,158,
 156,36,178,326,38,40,182,372,42,208,44,212,400,48,
 48,638,106,112,234,248,54,188,262,496,260,60,60,
 1040]