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A171187 as a simple table

na(n)
01
11
25
328
4273
56251
6578162
7107060591
829911744769
927309372325966
10100510174785157275
11579282314757603925315
125692451844585536053973346
13272831740026972379247127727751
1436494329378701187545939734030067963

[1,1,5,28,273,6251,578162,107060591,29911744769,
 27309372325966,100510174785157275,
 579282314757603925315,5692451844585536053973346,
 272831740026972379247127727751,
 36494329378701187545939734030067963]