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A296553 Number of nX7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 3 or 6 neighboring 1s. 1

%I #4 Dec 15 2017 16:28:48

%S 1,1,7,17,34,62,148,347,786,1702,3761,8400,18843,41959,93233,207359,

%T 462209,1030065,2293768,5106282,11371588,25328516,56410914,125623824,

%U 279760971,623046005,1387574808,3090202195,6882002941,15326533700

%N Number of nX7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 3 or 6 neighboring 1s.

%C Column 7 of A296554.

%H R. H. Hardin, <a href="/A296553/b296553.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=14

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

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

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

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

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

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

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

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

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

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

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

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

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

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

%Y Cf. A296554.

%K nonn

%O 1,3

%A _R. H. Hardin_, Dec 15 2017

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Last modified August 17 10:40 EDT 2024. Contains 375209 sequences. (Running on oeis4.)