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A339493 as a simple table

na(n)
10
20
34
411
524
652
7110
8228
9467
10949
111916
123848
137696
1415342
1530505
1660527
17119892
18237156
19468590
20925032
211824727
223597289
237088216
2413961168
2527489168
2654110618
27106489245
28209531251
29412217072
30810865812
311594878078
323136673996
336168522827
3412130206941

[0,0,4,11,24,52,110,228,467,949,1916,3848,7696,
 15342,30505,60527,119892,237156,468590,925032,
 1824727,3597289,7088216,13961168,27489168,
 54110618,106489245,209531251,412217072,810865812,
 1594878078,3136673996,6168522827,12130206941]