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A067223 Number of n X n 0..15 matrices with all row and column sums equal. 0
16, 256, 316624, 81851507456 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Sequence in context: A001025 A144318 A204080 * A041113 A041482 A204715

Adjacent sequences:  A067220 A067221 A067222 * A067224 A067225 A067226

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net), Feb 20 2002

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Last modified February 16 12:41 EST 2012. Contains 205909 sequences.