Number of edge-disjoint paths between opposite corners of a 2 X n grid.

A013991

Number of edge-disjoint paths between opposite corners of a 2 X n grid.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =16a(4) =72a(5) =335a(6) =1562a(7) =7273a(8) =33850a(9) =157534a(10) =733148a(11) =3412005a(12) =15879172a(13) =73900265a(14) =343925312a(15) =1600598044a(16) =7449042040a(17) =34667184251a(18) =161338016046a(19) =750852888177

External references