A071098 Number of ways to tile 4n X 4n square with n squares removed with dominoes.

18, 492804, 22396116645000, 1675204080301481563567504, 205572455982988820421241722535052040992

Offset

1,1

References

J. Propp, Enumeration of matchings: problems and progress, pp. 255-291 in L. J. Billera et al., eds, New Perspectives in Algebraic Combinatorics, Cambridge, 1999 (see Problem 10).

Links

Table of n, a(n) for n=1..5.

J. Propp, Updated article

J. Propp, Enumeration of matchings: problems and progress, in L. J. Billera et al. (eds.), New Perspectives in Algebraic Combinatorics

Crossrefs

Sequence in context: A013762 A078352 A215577 * A259164 A013808 A115479

Adjacent sequences: A071095 A071096 A071097 * A071099 A071100 A071101

Keyword

nonn

Author

N. J. A. Sloane, May 28 2002

Status

approved