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 A188394 Number of (8*n) X n binary arrays with rows in nonincreasing order and 8 ones in every column. 1

%I

%S 1,9,625,411180,2067951459,56145844958803,5878897478976883089,

%T 1831628658711424019558504,1413561739206881774907508536243,

%U 2374109597657754735102006133988615563,7893915426933380799680357236645251399639715,48348427353106609781034833166459980023688120512638

%N Number of (8*n) X n binary arrays with rows in nonincreasing order and 8 ones in every column.

%e All solutions for 16 X 2:

%e ..1..1....1..1....1..1....1..1....1..0....1..1....1..1....1..1....1..1

%e ..1..1....1..1....1..0....1..1....1..0....1..1....1..1....1..1....1..1

%e ..1..1....1..1....1..0....1..0....1..0....1..1....1..1....1..1....1..1

%e ..1..1....1..1....1..0....1..0....1..0....1..1....1..1....1..0....1..1

%e ..1..1....1..1....1..0....1..0....1..0....1..1....1..0....1..0....1..1

%e ..1..1....1..0....1..0....1..0....1..0....1..1....1..0....1..0....1..1

%e ..1..1....1..0....1..0....1..0....1..0....1..0....1..0....1..0....1..1

%e ..1..1....1..0....1..0....1..0....1..0....1..0....1..0....1..0....1..0

%e ..0..0....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1

%e ..0..0....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..0

%e ..0..0....0..1....0..1....0..1....0..1....0..0....0..1....0..1....0..0

%e ..0..0....0..0....0..1....0..1....0..1....0..0....0..1....0..1....0..0

%e ..0..0....0..0....0..1....0..1....0..1....0..0....0..0....0..1....0..0

%e ..0..0....0..0....0..1....0..1....0..1....0..0....0..0....0..0....0..0

%e ..0..0....0..0....0..1....0..0....0..1....0..0....0..0....0..0....0..0

%e ..0..0....0..0....0..0....0..0....0..1....0..0....0..0....0..0....0..0

%Y Row 8 of A188392.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 30 2011

%E a(7)-a(12) from _Andrew Howroyd_, May 17 2020

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Last modified November 27 14:41 EST 2022. Contains 358405 sequences. (Running on oeis4.)