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A298966 Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

%I A298966 #4 Jan 30 2018 13:28:32
%S A298966 8,128,1575,21098,280468,3740381,49885231,665351771,8874346832,
%T A298966 118364863862,1578735453349,21056975599629,280855308864195,
%U A298966 3746013029750793,49963853976933385,666411644915463676
%N A298966 Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.
%C A298966 Column 4 of A298970.
%H A298966 R. H. Hardin, <a href="/A298966/b298966.txt">Table of n, a(n) for n = 1..210</a>
%F A298966 Empirical: a(n) = 13*a(n-1) +11*a(n-2) -67*a(n-3) -264*a(n-4) -64*a(n-5) +1260*a(n-6) +656*a(n-7) -3045*a(n-8) -3423*a(n-9) +5088*a(n-10) +9482*a(n-11) -514*a(n-12) -10331*a(n-13) -6164*a(n-14) +3337*a(n-15) +4293*a(n-16) +719*a(n-17) -809*a(n-18) +116*a(n-19) +149*a(n-20) -62*a(n-21) -160*a(n-22) -48*a(n-23)
%e A298966 Some solutions for n=5
%e A298966 ..0..0..0..1. .0..0..0..1. .0..0..1..0. .0..0..0..1. .0..0..0..1
%e A298966 ..1..0..1..1. .1..0..0..1. .0..1..1..1. .0..1..0..1. .0..1..1..1
%e A298966 ..0..1..0..1. .0..1..1..0. .0..0..1..1. .1..0..1..0. .1..1..1..0
%e A298966 ..0..0..1..1. .1..0..0..1. .0..0..1..0. .1..1..0..0. .1..0..0..0
%e A298966 ..1..1..1..0. .1..0..0..1. .0..1..1..0. .1..1..0..1. .1..0..1..0
%Y A298966 Cf. A298970.
%K A298966 nonn
%O A298966 1,1
%A A298966 _R. H. Hardin_, Jan 30 2018