Number of distinct solutions of sum{i=1..5}(x(2i-1)*x(2i)) = 0 (mod n), with x() in 0..n-1.

A180797

Number of distinct solutions of sum{i=1..5}(x(2i-1)*x(2i)) = 0 (mod n), with x() in 0..n-1.

Terms

    a(0) =1a(1) =12a(2) =87a(3) =549a(4) =2338a(5) =9383a(6) =28783a(7) =85956a(8) =213618a(9) =518268a(10) =1100399a(11) =2370275a(12) =4457359a(13) =8595967a(14) =15130785a(15) =26913348a(16) =43848123a(17) =74308434a(18) =114423976a(19) =184270107a(20) =274414305a(21) =419987334a(22) =601573248a(23) =905711494a(24) =1247825148a(25) =1806542438

External references