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A220200 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX4 array 1

%I #4 Dec 07 2012 07:04:50

%S 20,89,956,6855,44886,303148,2089805,14021160,88828793,530514956,

%T 3025654183,16666381611,89072121670,462114159737,2327673032529,

%U 11394626760089,54291971399557,252137513999724,1142599192201196

%N Number of nX4 arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX4 array

%C Column 4 of A220204

%H R. H. Hardin, <a href="/A220200/b220200.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

%e ..3..3..3..2....1..1..1..3....3..3..2..2....3..1..1..2....3..3..3..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 07 2012

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)