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A067222 Number of n X n 0..14 matrices with all row and column sums equal. +0
1
15, 225, 229503, 42980713761 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A012852 A001024 A012643 this_sequence A154597 A041422 A129836

Adjacent sequences: A067219 A067220 A067221 this_sequence A067223 A067224 A067225

KEYWORD

nonn

AUTHOR

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

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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