Closed meanders with 3 components and 2n bridges.

A006658

Closed meanders with 3 components and 2n bridges.

Terms

    a(0) =5a(1) =56a(2) =580a(3) =5894a(4) =60312a(5) =624240a(6) =6540510a(7) =69323910a(8) =742518832a(9) =8028001566a(10) =87526544560a(11) =961412790002

External references