Number of self-avoiding closed paths on an n X 7 grid which pass through four corners ((0,0), (0,6), (n-1,6), (n-1,0)).

A358713

Number of self-avoiding closed paths on an n X 7 grid which pass through four corners ((0,0), (0,6), (n-1,6), (n-1,0)).

Terms

    a(0) =1a(1) =41a(2) =1081a(3) =26515a(4) =674292a(5) =17720400a(6) =471468756a(7) =12570253556a(8) =335101401877

External references