Number of distinct solutions of sum{i=1..6}(x(2i-1)*x(2i)) = 1 (mod n), with x() in 0..n-1.

A180808

Number of distinct solutions of sum{i=1..6}(x(2i-1)*x(2i)) = 1 (mod n), with x() in 0..n-1.

Terms

    a(0) =0a(1) =12a(2) =153a(3) =1200a(4) =7752a(5) =37264a(6) =158239a(7) =550860a(8) =1766580a(9) =4912624a(10) =13019959a(11) =30966523a(12) =71311499a(13) =150570542a(14) =312748103a(15) =603515488a(16) =1154632937a(17) =2072921406a(18) =3718739870a(19) =6302870939a(20) =10715702976a(21) =17307564420a(22) =28173570885a(23) =43706816100

External references