Number of distinct solutions of sum{i=1..3}(x(2i-1)*x(2i)) = 1 (mod n), with x() only in 1..n-1.

Terms

a(0) =0a(1) =1a(2) =3a(3) =14a(4) =46a(5) =106a(6) =254a(7) =494a(8) =939a(9) =1528a(10) =2668a(11) =3958a(12) =6334a(13) =8641a(14) =13239a(15) =17240a(16) =25227a(17) =31128a(18) =44660a(19) =53786a(20) =74111a(21) =86712a(22) =118779a(23) =134632a(24) =181755a(25) =202431a(26) =266175a(27) =296323a(28) =387533a(29) =412008