35260domain: NAppears in sequencesa(n) = n*(n - 1)*(n + 2)/2.at n=40A077414G.f. satisfies: A(x) = 1 + x*A(x+x^2)^3.at n=7A127785Coefficients in asymptotic expansion of sequence A107895.at n=7A248871p-INVERT of the squares (A000290), where p(S) = 1 + S - 3 S^2.at n=6A292536