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A043420 as a simple table

na(n)
12400
24801
37202
49603
512004
614405
714748
815091
915434
1015777
1116120
1216463
1316512
1416561
1516610
1616659
1716708
1816757
1916764
2016771
2116778
2216785
2316792
2416799
2516800
2616801
2716802
2816803
2916804
3016805
3119207

[2400,4801,7202,9603,12004,14405,14748,15091,
 15434,15777,16120,16463,16512,16561,16610,16659,
 16708,16757,16764,16771,16778,16785,16792,16799,
 16800,16801,16802,16803,16804,16805,19207]