646460

Appears in sequences

• Number of permutations with certain forbidden subsequences.at n=13A054393
• Free chiral polyominoes with n squares, having 90-degree rotational symmetry about the center of a square of the underlying square matrix.at n=51A351142
• a(n) is the result of n applications of the function f to n, where f(x) = floor((3*x + 1)/2) (A007494).at n=25A353220