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Number of 4Xn 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

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`%I #5 Dec 24 2016 08:39:04
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`%S 0,31,296,1922,10491,50690,226771,963728,3941732,15655280,60749739,
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`%T 231325874,867192006,3208394065,11737643962,42526452550,152777627539,
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`%U 544782076812,1929805835927,6795769111934,23804414728200,82983605105905
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`%N Number of 4Xn 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
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`%C Row 4 of A279977.
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`%H R. H. Hardin, <a href="/A279980/b279980.txt">Table of n, a(n) for n = 1..210</a>
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`%H R. H. Hardin, <a href="/A279980/a279980.txt">Empirical recurrence of order 68</a>
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`%F Empirical recurrence of order 68 (see link above)
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`%e Some solutions for n=4
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`%e ..0..0..1..0. .0..1..1..0. .0..1..0..1. .0..1..1..0. .0..1..0..0
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`%e ..1..0..0..1. .1..0..1..1. .1..0..1..0. .1..0..1..1. .0..1..0..1
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`%e ..0..1..1..0. .1..0..0..1. .0..0..1..0. .1..1..0..0. .0..0..1..0
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`%e ..0..0..1..1. .1..1..0..0. .1..0..0..1. .1..0..1..0. .1..1..0..1
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`%Y Cf. A279977.
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`%K nonn
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`%O 1,2
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`%A _R. H. Hardin_, Dec 24 2016
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