Number of ways of covering a 2n X 2n lattice with 2n^2 dominoes of which exactly 6 are horizontal (or vertical) dominoes.
A054344
Number of ways of covering a 2n X 2n lattice with 2n^2 dominoes of which exactly 6 are horizontal (or vertical) dominoes.
Terms
- a(0) =9a(1) =1064a(2) =21656a(3) =197484a(4) =1143366a(5) =4927524a(6) =17240292a(7) =51631617a(8) =137044523a(9) =330284988a(10) =735542444a(11) =1533609350a(12) =3024043008a(13) =5684167992a(14) =10249533240a(15) =17821214019a(16) =30006185613a(17) =49097892704a(18) =78305096016
External references
- oeis: A054344