Quotient ((2n)^(2n-2)-1)/(2n+1)/(2n-1).

A125599

Quotient ((2n)^(2n-2)-1)/(2n+1)/(2n-1).

Terms

    a(0) =0a(1) =1a(2) =37a(3) =4161a(4) =1010101a(5) =432988561a(6) =290738012181

External references