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A059140 as a simple table

na(n)
04
115
240
393
4202
5423
6868
71761
83550
97131
1014296
1128629
1257298
13114639
14229324
15458697
16917446
171834947
183669952
197339965
2014679994
2129360055
2258720180
23117440433
24234880942
25469761963
26939524008
271879048101
283758096290
297516192671
3015032385436

[4,15,40,93,202,423,868,1761,3550,7131,14296,
 28629,57298,114639,229324,458697,917446,1834947,
 3669952,7339965,14679994,29360055,58720180,
 117440433,234880942,469761963,939524008,
 1879048101,3758096290,7516192671,15032385436]