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 A233403 Number of (n+1)X(2+1) 0..2 arrays with row and column sums nondecreasing, and no adjacent elements equal 1

%I #4 Dec 09 2013 04:38:22

%S 11,37,35,100,265,293,756,1937,2346,5788,14533,18598,44777,110861,

%T 147478,349309,854388,1171388,2739451,6632534,9314701,21564727,

%U 51751900,74137387,170211322,405346970,590489477,1346189954,3184156943,4705761017

%N Number of (n+1)X(2+1) 0..2 arrays with row and column sums nondecreasing, and no adjacent elements equal

%C Column 2 of A233408

%H R. H. Hardin, <a href="/A233403/b233403.txt">Table of n, a(n) for n = 1..199</a>

%e Some solutions for n=5

%e ..1..0..2....1..0..1....1..0..2....1..2..0....0..2..1....1..0..1....0..2..0

%e ..2..1..0....0..2..0....0..2..1....0..1..2....2..1..0....0..1..2....1..0..1

%e ..0..2..1....1..0..1....1..0..2....1..2..1....1..0..2....1..2..0....0..1..2

%e ..1..0..2....0..1..2....2..1..0....2..0..2....0..2..1....2..0..1....1..2..0

%e ..0..2..1....1..2..0....1..0..2....1..2..1....1..0..2....1..2..0....2..0..1

%e ..2..1..2....2..1..2....0..2..1....2..0..2....2..1..0....0..1..2....0..1..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 09 2013

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Last modified June 4 13:02 EDT 2023. Contains 363128 sequences. (Running on oeis4.)