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A059839 as a simple table

na(n)
01
15
2341
37381
469905
5406901
61727605
75884901
817043521
943584805
10101010101
11216145205
12432988561
13820586261
141483357205
152574332101
164311810305
176999978821
1811054078101
1917030739605
2025664160401
2137908820405
2254989488181

[1,5,341,7381,69905,406901,1727605,5884901,
 17043521,43584805,101010101,216145205,432988561,
 820586261,1483357205,2574332101,4311810305,
 6999978821,11054078101,17030739605,25664160401,
 37908820405,54989488181]