Number of dimer tilings of a 4 x 2n Moebius strip.

A103998

Number of dimer tilings of a 4 x 2n Moebius strip.

Terms

    a(0) =1a(1) =11a(2) =71a(3) =539a(4) =4271a(5) =34276a(6) =276119a(7) =2226851a(8) =17965151a(9) =144948419a(10) =1169523076a(11) =9436433171a(12) =76139155439a(13) =614339685971

External references