Non-crossing, non-nesting, 4-colored permutations on {1,2,...,n}.

A224993

Non-crossing, non-nesting, 4-colored permutations on {1,2,...,n}.

Terms

    a(0) =1a(1) =4a(2) =32a(3) =352a(4) =4736a(5) =72832a(6) =1226240a(7) =21948928a(8) =409192448a(9) =7833143296a(10) =152494727168

External references