Denominator of sum of -9th powers of divisors of n.

Terms

a(0) =1a(1) =512a(2) =19683a(3) =262144a(4) =1953125a(5) =93312a(6) =40353607a(7) =134217728a(8) =387420489a(9) =500000000a(10) =2357947691a(11) =1289945088a(12) =10604499373a(13) =2582630848a(14) =1423828125a(15) =68719476736a(16) =118587876497a(17) =7346640384a(18) =322687697779