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A235440 Number of (n+1)X(4+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise 1

%I

%S 11100,606279,37115629,1957598978,105025440136,4689618011086,

%T 213149442840795,8137410774396649,316806854119735304,

%U 10529263700505157069,357031453053915561568,10500030926110350648033

%N Number of (n+1)X(4+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise

%C Column 4 of A235441

%H R. H. Hardin, <a href="/A235440/b235440.txt">Table of n, a(n) for n = 1..20</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 10 2014

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Last modified October 16 05:23 EDT 2019. Contains 328043 sequences. (Running on oeis4.)