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A145014 Number of n X n nonnegative integer arrays with every 2 X 2 subblock summing to 4. 0
35, 259, 1059, 5395, 19091, 84499, 284451, 1180243, 3922835 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..10.

CROSSREFS

Sequence in context: A113941 A067238 A267022 * A090646 A220929 A251931

Adjacent sequences:  A145011 A145012 A145013 * A145015 A145016 A145017

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 29 2008

EXTENSIONS

Changed positive to nonnegative, added n X n. - R. H. Hardin, Sep 30 2008

STATUS

approved

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Last modified May 28 10:48 EDT 2017. Contains 287240 sequences.