Number of matchings avoiding a certain pattern (see Cervetti-Ferrari, Cor. 3.1(ii)).

A338725

Number of matchings avoiding a certain pattern (see Cervetti-Ferrari, Cor. 3.1(ii)).

Terms

    a(0) =1a(1) =3a(2) =15a(3) =105a(4) =944a(5) =10341a(6) =133132a(7) =1961919a(8) =32441303a(9) =592718236

External references