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

1,1

LINKS

Table of n, a(n) for n=1..4.

CROSSREFS

Sequence in context: A267731 A001024 A012643 * A154597 A041422 A129836

Adjacent sequences:  A067219 A067220 A067221 * A067223 A067224 A067225

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 20 2002

STATUS

approved

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Last modified May 24 18:27 EDT 2022. Contains 354043 sequences. (Running on oeis4.)