A071092 Moments of inertia of a certain configuration of hexagons.

1, 20, 93, 296, 725

Offset

1,2

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 6).

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

Index entries for sequences related to moment of inertia.

Crossrefs

Sequence in context: A177291 A169711 A281391 * A144359 A124948 A126407

Adjacent sequences: A071089 A071090 A071091 * A071093 A071094 A071095

Keyword

nonn,more

Author

N. J. A. Sloane, May 28 2002

Status

approved