38132

Appears in sequences

• Starting positions of strings of three 6's in the decimal expansion of Pi.at n=30A083625
• Number of cubic equations ax^3 + bx^2 + cx + d = 0 with integer coefficients |a|,|b|,|c|,|d| <= n, a <> 0, having three distinct real roots.at n=10A155191
• Number of (w,x,y) with all terms in {0,...,n} and x != min(|w-x|, |x-y|).at n=33A213502
• Number of unlabeled forests on n nodes that have exactly two nonempty components.at n=17A274937
• Number of unlabeled forests with n nodes that have two components, neither of which is the empty graph.at n=17A274938
• Solution (a(n)) of the complementary equation in Comments.at n=9A298173
• a(n) = [q^n] Product_{d | n} theta_3(q^d), where theta_3() is the Jacobi theta function.at n=60A320305
• Irregular triangular array read by rows. T(n,k) is the number of unlabeled forests of distinct trees on n nodes containing exactly k trees.at n=52A336096