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A145014 Number of n X n nonnegative integer arrays with every 2 X 2 subblock summing to 4. +0
1
35, 259, 1059, 5395, 19091, 84499, 284451, 1180243, 3922835 (list; graph; listen)
OFFSET

2,1

CROSSREFS

Sequence in context: A068722 A113941 A067238 this_sequence A090646 A055658 A125773

Adjacent sequences: A145011 A145012 A145013 this_sequence A145015 A145016 A145017

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net), Sep 29 2008

EXTENSIONS

Changed positive to nonnegative, added n X n. - Ron Hardin (rhhardin(AT)att.net), Sep 30 2008

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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