9371648

Appears in sequences

• Number of symmetric non-crossing connected graphs on n equidistant nodes on a circle.at n=17A089073
• Positive integers T_i such that Sum_{k >= 0} (S_k * x^(2*k+1)) + 1/24 - Sum_{k >= 1} (T_k * x^(2*k)) = (cos((2/3) * arccos(6 * sqrt(3) * x)))/12 for all real x with |x| <= 1/(6 * sqrt(3)), where S_k = A176898(k).at n=4A281733
• The number of stones-and-bones tilings of the (3n-1,3n)-benzel when one orientation of bone is forbidden.at n=3A364483