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A155301 as a simple table

na(n)
41
513
637
773
8274
92707
1030458
11210247
121927098
1330544775
14732699440
1516750707651
16417262694530
1714440304500005
18706310189376904

[1,13,37,73,274,2707,30458,210247,1927098,
 30544775,732699440,16750707651,417262694530,
 14440304500005,706310189376904]