Number of distinct solutions of sum{i=1..9}(x(2i-1)*x(2i)) = 1 (mod n), with x() in 0..n-1.

A180811

Number of distinct solutions of sum{i=1..9}(x(2i-1)*x(2i)) = 1 (mod n), with x() in 0..n-1.

Terms

    a(0) =0a(1) =25a(2) =666a(3) =11900a(4) =163438a(5) =1652886a(6) =13449080a(7) =88130750a(8) =492442470a(9) =2357340087a(10) =10047650020a(11) =38205314077a(12) =133156227170a(13) =425294714200

External references