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A213805 Number of 7X7 0..n symmetric arrays with all rows summing to floor(n*7/2) 0

%I

%S 35150,133721189,46259653191,4893373431575,212962858290086

%N Number of 7X7 0..n symmetric arrays with all rows summing to floor(n*7/2)

%C Row 7 of A213800

%e Some solutions for n=4

%e ..2..2..1..2..2..4..1....1..2..2..4..2..0..3....4..4..0..0..3..0..3

%e ..2..4..4..4..0..0..0....2..0..2..3..1..2..4....4..4..0..2..3..0..1

%e ..1..4..3..3..3..0..0....2..2..4..1..4..0..1....0..0..1..1..4..4..4

%e ..2..4..3..4..0..0..1....4..3..1..1..0..2..3....0..2..1..0..3..4..4

%e ..2..0..3..0..1..4..4....2..1..4..0..2..4..1....3..3..4..3..0..1..0

%e ..4..0..0..0..4..2..4....0..2..0..2..4..4..2....0..0..4..4..1..3..2

%e ..1..0..0..1..4..4..4....3..4..1..3..1..2..0....3..1..4..4..0..2..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Jun 20 2012

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Last modified June 20 17:40 EDT 2019. Contains 324234 sequences. (Running on oeis4.)