25873744

Appears in sequences

• a(n) = T(2*n,n), T given by A026736.at n=13A026737
• a(n) = T(n, floor(n/2)), T given by A026736.at n=26A026742
• Number of permutations avoiding the patterns {3241,3421,4321}; number of weak sorting class based on 3241.at n=14A111279