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A186205 as a simple table

na(n)
13
261
3887
49887
539887
6339887
71618033
865638117
9398874989
101772030917
1138622235369
12803398874989
131618033988749
1461803398874989
15586834365638117
168343656381177203
1769317931800607667
18484754088075386891

[3,61,887,9887,39887,339887,1618033,65638117,
 398874989,1772030917,38622235369,803398874989,
 1618033988749,61803398874989,586834365638117,
 8343656381177203,69317931800607667,
 484754088075386891]