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A377006
Number of inequivalent 2*n X 12 binary arrays with row sums 6 and column sums n up to row and column permutations.
1
1, 1, 7, 132, 65548, 128665248, 294494683312, 607662931576945, 1078571634893111039, 1641745848357513999450, 2157522985252158679423406, 2468770667797731319051018701, 2480199767193520485788791333065
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..12.
CROSSREFS
Column k=6 of
A377007
.
Cf.
A172558
.
Sequence in context:
A220321
A247597
A305955
*
A051832
A103050
A110111
Adjacent sequences:
A377003
A377004
A377005
*
A377007
A377008
A377009
KEYWORD
nonn
,
more
AUTHOR
Andrew Howroyd
, Oct 12 2024
STATUS
approved
