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A300604 Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 09 2018 17:23:12

%S 1,74,230,1397,11752,110249,1056816,9684995,92435041,880584819,

%T 8391672510,79962511095,763064081276,7281278638212,69463421784079,

%U 662816884120372,6324400190195839,60344941962776127,575795288992490918

%N Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A300605.

%H R. H. Hardin, <a href="/A300604/b300604.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300605.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 09 2018

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)