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A067219 Number of n X n 0..11 matrices with all row and column sums equal. 1
12, 144, 75516, 4641494832, 31335724079805792, 24293081804978470413606900 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..6.
CROSSREFS
Sequence in context: A138444 A137886 A097303 * A075619 A055332 A288792
Adjacent sequences: A067216 A067217 A067218 * A067220 A067221 A067222
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Feb 20 2002
EXTENSIONS
a(5)-a(6) from Sean A. Irvine, Dec 11 2023
STATUS
approved

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Last modified June 1 02:47 EDT 2024. Contains 373008 sequences. (Running on oeis4.)