Number of distinct solutions of sum{i=1..8}(x(2i-1)*x(2i)) = 0 (mod n), with x() only in 1..n-1.
A180779
Number of distinct solutions of sum{i=1..8}(x(2i-1)*x(2i)) = 0 (mod n), with x() only in 1..n-1.
Terms
- a(0) =0a(1) =1a(2) =15a(3) =327a(4) =4856a(5) =53455a(6) =444003a(7) =2948305a(8) =16112289a(9) =75389116a(10) =307372600a(11) =1122069080a(12) =3701885580a(13) =11258893954a(14) =31699979961a(15) =83910860201a(16) =209004408715a(17) =496246703439
External references
- oeis: A180779