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A151828 Number of hv-convex sets from class S having semiperimeter n of the bounding rectangle. 1
1, 2, 8, 32, 139, 618, 2779, 12528, 56404, 253152, 1131849, 5040412, 22359981, 98837102 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

REFERENCES

Peter Balazs, Generation and Empirical Investigation of hv-Convex Discrete Sets, in Image Analysis, Lecture Notes in Computer Science, Volume 4522/2007, Springer-Verlag.

LINKS

Table of n, a(n) for n=2..15.

CROSSREFS

Cf. A005436, A151829.

Sequence in context: A150844 A141380 A151304 * A150845 A150846 A150847

Adjacent sequences:  A151825 A151826 A151827 * A151829 A151830 A151831

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 12 2009

STATUS

approved

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Last modified December 1 20:23 EST 2021. Contains 349434 sequences. (Running on oeis4.)