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A240889 as a simple table

na(n)
14
236
3289
42362
519065
6154858
71255585
810186158
982615013
10670126562
115435464261
1244088312610
13357608156789
142900631278142
1523527575671521
16190836751334954
171547913820098569
1812555429390762018
19101839521640750945

[4,36,289,2362,19065,154858,1255585,10186158,
 82615013,670126562,5435464261,44088312610,
 357608156789,2900631278142,23527575671521,
 190836751334954,1547913820098569,
 12555429390762018,101839521640750945]