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A218066 Number of 3Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..1 3Xn array 1

%I #6 Nov 20 2012 19:56:27

%S 8,16,74,260,1046,3974,15578,60242,234468,910060,3536762,13737348,

%T 53371468,207332364,805465810,3129084596,12156035112,47224200410,

%U 183458638422,712707497212,2768755861210,10756176540402,41786039888224

%N Number of 3Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..1 3Xn array

%C Row 3 of A218064

%H R. H. Hardin, <a href="/A218066/b218066.txt">Table of n, a(n) for n = 1..170</a>

%F Empirical: a(n) = 2*a(n-1) +11*a(n-2) -7*a(n-3) -34*a(n-4) +11*a(n-5) +49*a(n-6) -14*a(n-7) -36*a(n-8) +7*a(n-9) +a(n-10) +8*a(n-11) +2*a(n-12) -13*a(n-13) +2*a(n-14) +4*a(n-15) for n>18

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 19 2012

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Last modified April 23 10:13 EDT 2024. Contains 371905 sequences. (Running on oeis4.)