Number of nonintersecting (or self-avoiding) rook paths joining opposite corners of an n X n grid that move in 3 or fewer cardinal directions.

A265132

Number of nonintersecting (or self-avoiding) rook paths joining opposite corners of an n X n grid that move in 3 or fewer cardinal directions.

Terms

    a(0) =1a(1) =2a(2) =12a(3) =108a(4) =1180a(5) =15300a(6) =234374a(7) =4190872a(8) =86080572a(9) =1999951380a(10) =51874664446

External references