85956

Appears in sequences

• Number of distinct solutions of sum{i=1..5}(x(2i-1)*x(2i)) = 0 (mod n), with x() in 0..n-1.at n=7A180797
• Expansion of Product_{k>=1} (1 + 4*x^k).at n=26A261568
• a(n) = 81*n^2 - 69*n + 24.at n=33A304616