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A235732 Number of (n+1)X(4+1) 0..1 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise 1

%I #5 Aug 11 2014 22:46:08

%S 746,15963,337412,7041734,146785037,3054397001,63554803821,

%T 1322113787590,27503978998503,572147678579818,11902082913813364,

%U 247591529985854808,5150496436912541860,107142578702763898163,2228821011220833912388

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

%C Column 4 of A235736

%H R. H. Hardin, <a href="/A235732/b235732.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A235732/a235732.txt">Empirical recurrence of order 86</a>

%F Empirical recurrence of order 86 (see link above)

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 15 2014

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Last modified April 19 05:19 EDT 2024. Contains 371782 sequences. (Running on oeis4.)