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A206416 as a simple table

na(n)
14
25
36
48
510
612
714
816
918
1020
1122
1224
1324
1426
1528
1629
1730
1832
1933
2034
2136
2237
2338
2440

[4,5,6,8,10,12,14,16,18,20,22,24,24,26,28,29,30,
 32,33,34,36,37,38,40]