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A069594 as a simple table

na(n)
241
3401
44001
540009
6400009
74000037
840000003
9400000009
104000000007
1140000000003
12400000000019
134000000000039
1440000000000001
15400000000000063
164000000000000021
1740000000000000063
18400000000000000013

[41,401,4001,40009,400009,4000037,40000003,
 400000009,4000000007,40000000003,400000000019,
 4000000000039,40000000000001,400000000000063,
 4000000000000021,40000000000000063,
 400000000000000013]