T(n,k)=number of distinct solutions of sum{i=1..k}(x(2i-1)*x(2i)) = 0 (mod n), with x() only in 1..n-1.
A180782
T(n,k)=number of distinct solutions of sum{i=1..k}(x(2i-1)*x(2i)) = 0 (mod n), with x() only in 1..n-1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =0a(6) =0a(7) =0a(8) =2a(9) =1a(10) =0a(11) =1a(12) =5a(13) =6a(14) =0a(15) =0a(16) =0a(17) =3a(18) =14a(19) =13a(20) =2a(21) =0a(22) =1a(23) =7a(24) =34a(25) =42a(26) =23a(27) =0a(28) =0a(29) =0
External references
- oeis: A180782