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A067221
Number of n X n 0..13 matrices with all row and column sums equal.
1
14, 196, 162722, 21592075596, 428134536074377254, 1326740266296956878519910950
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..6.
CROSSREFS
Sequence in context:
A171288
A001023
A278476
*
A072533
A041085
A124239
Adjacent sequences:
A067218
A067219
A067220
*
A067222
A067223
A067224
KEYWORD
nonn
,
more
AUTHOR
R. H. Hardin
, Feb 20 2002
EXTENSIONS
a(5)-a(6) from
Sean A. Irvine
, Dec 10 2023
STATUS
approved
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Last modified April 23 15:20 EDT 2024. Contains 371916 sequences. (Running on oeis4.)