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A233059 Number of (n+1)X(2+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..2+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing 1

%I #4 Dec 03 2013 19:31:44

%S 13,47,161,564,1933,6529,21904,72710,238992,781279,2537019,8187471,

%T 26318697,84221878,268396362,852861982,2701532776,8532060967,

%U 26887756403,84535960052,265197189246,830543999898,2596441897488,8103132791812

%N Number of (n+1)X(2+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..2+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing

%C Column 2 of A233062

%H R. H. Hardin, <a href="/A233059/b233059.txt">Table of n, a(n) for n = 1..35</a>

%e Some solutions for n=5

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 03 2013

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Last modified April 25 10:01 EDT 2024. Contains 371967 sequences. (Running on oeis4.)