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

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =2a(6) =8a(7) =8a(8) =25a(9) =27a(10) =58a(11) =58a(12) =115a(13) =112a(14) =193a(15) =194a(16) =324a(17) =266a(18) =485a(19) =428a(20) =652a(21) =596a(22) =958a(23) =770a(24) =1270a(25) =1069a(26) =1543a(27) =1402a(28) =2121a(29) =1552