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%I A301998 #4 Mar 30 2018 12:29:15
%S A301998 8,128,1108,10982,122232,1366374,15243860,169636124,1884309898,
%T A301998 20919022400,232254936138,2579000358404,28639373845122,
%U A301998 318037976285038,3531770886607536,39219734913406306,435528277377832336
%N A301998 Number of nX7 0..1 arrays with every element equal to 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.
%C A301998 Column 7 of A301999.
%H A301998 R. H. Hardin, <a href="/A301998/b301998.txt">Table of n, a(n) for n = 1..210</a>
%H A301998 R. H. Hardin, <a href="/A301998/a301998.txt">Empirical recurrence of order 52</a>
%F A301998 Empirical recurrence of order 52 (see link above)
%e A301998 Some solutions for n=5
%e A301998 ..0..0..1..0..1..0..0. .0..0..1..1..1..1..0. .0..0..1..0..0..1..1
%e A301998 ..0..1..0..1..0..1..1. .0..0..0..0..1..0..1. .0..1..1..0..1..0..0
%e A301998 ..1..0..0..1..0..1..0. .1..1..0..1..0..1..0. .0..0..1..1..0..1..1
%e A301998 ..1..1..1..0..1..0..0. .1..1..0..1..1..0..1. .1..1..0..1..0..0..0
%e A301998 ..0..0..0..1..1..1..1. .0..0..1..0..0..1..1. .0..0..1..1..1..0..0
%Y A301998 Cf. A301999.
%K A301998 nonn
%O A301998 1,1
%A A301998 _R. H. Hardin_, Mar 30 2018

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