247554domain: NAppears in sequencesNumber of distinct solutions of sum{i=1..3}(x(2i-1)*x(2i)) = 1 (mod n), with x() in 0..n-1.at n=25A180805Number of compositions (ordered partitions) of n into distinct parts not greater than n/2.at n=36A368501G.f. satisfies A(x) = 1 + x * A(x)^6 * (1 + A(x)).at n=5A371700