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

Terms

a(0) =0a(1) =2a(2) =7a(3) =12a(4) =24a(5) =31a(6) =59a(7) =74a(8) =111a(9) =121a(10) =202a(11) =208a(12) =323a(13) =310a(14) =454a(15) =484a(16) =695a(17) =597a(18) =957a(19) =874a(20) =1183a(21) =1125a(22) =1665a(23) =1448a(24) =2070a(25) =1823a(26) =2439a(27) =2304a(28) =3273a(29) =2524