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A302370 Number of 4Xn 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Apr 06 2018 12:23:45

%S 8,3,109,77,918,3125,21831,125193,824459,5383504,35779184,240480550,

%T 1615536651,10916466595,73707212142,498626574631,3372684616301,

%U 22824815728427,154471448375476,1045558911080013,7077203544387174

%N Number of 4Xn 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 4 of A302367.

%H R. H. Hardin, <a href="/A302370/b302370.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A302370/a302370.txt">Empirical recurrence of order 63</a>

%F Empirical recurrence of order 63 (see link above)

%e Some solutions for n=5

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

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

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

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

%Y Cf. A302367.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 06 2018

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Last modified March 29 09:32 EDT 2024. Contains 371268 sequences. (Running on oeis4.)