Number of domino tilings of a cross whose center is a 4 X 4 square and in which each of the four arms has length n.

A220437

Number of domino tilings of a cross whose center is a 4 X 4 square and in which each of the four arms has length n.

Terms

    a(0) =6a(1) =28a(2) =340a(3) =2304a(4) =20652a(5) =157926a(6) =1313248a(7) =10426852a(8) =84878208a(9) =681580848a(10) =5513822118a(11) =44425974796a(12) =358734643924

External references