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A265995 Number of 5Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself. 1

%I #4 Dec 19 2015 11:15:38

%S 1,1,30,7,1,26,59,45,64,186,295,506,885,1725,3265,5893,10108,19684,

%T 36250,64589,121581,227175,416368,772126,1440512,2674555,4977901,

%U 9315535,17396488,32509051,61052607,114584666,215397646,406200423,766485477

%N Number of 5Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself.

%C Row 5 of A265991.

%H R. H. Hardin, <a href="/A265995/b265995.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

%e ..1..1..4..2....1..1..1..1....1..1..1..1....1..1..4..2....1..1..3..2

%e ..1..3..3..1....1..4..3..1....1..3..3..1....1..3..3..1....1..3..4..1

%e ..2..4..1..1....2..3..1..1....2..4..1..1....1..1..1..1....1..1..1..1

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

%Y Cf. A265991.

%K nonn

%O 1,3

%A _R. H. Hardin_, Dec 19 2015

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