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A172851 as a simple table

na(n)
12224955
21020771217185075
3784651415725030722439025
4752392911462866118274927841209875
5816183539809026724414261163240882996876580

[2224955,1020771217185075,
 784651415725030722439025,
 752392911462866118274927841209875,
 816183539809026724414261163240882996876580]