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A172822
Number of n X n 0..4 arrays with row sums n and column sums n
1
1, 3, 55, 10147, 21107931, 511508441781, 150603715387867113, 555249505892003620997475, 26159597034338175244538552103907, 16021054958659349444630042183181806132953
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A002818 A119190 A172748 * A172873 A172907 A172932
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved