A172747 - OEIS

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A172747 as a simple table

n	a(n)
1	1
2	25653
3	1612210777
4	56983034209069
5	3165885061421056701
6	213886825849469969067741
7	16000785789980520484761813393
8	1313785405202869686066790465746477

[1,25653,1612210777,56983034209069, 3165885061421056701,213886825849469969067741, 16000785789980520484761813393, 1313785405202869686066790465746477]