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 A232321 Number of (5+1) X (n+1) 0..1 arrays with every element equal to some horizontal or antidiagonal neighbor, with top left element zero. 1

%I #10 Apr 22 2021 14:02:56

%S 89,2640,90157,3815483,161243887,6736602042,281959315373,

%T 11801434817942,493946679273719,20673894894951135,865297397287880776,

%U 36216658523348672068,1515833034012979726393,63444555196518747182748

%N Number of (5+1) X (n+1) 0..1 arrays with every element equal to some horizontal or antidiagonal neighbor, with top left element zero.

%C Row 5 of A232316.

%H R. H. Hardin, <a href="/A232321/b232321.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

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

%Y Cf. A232316.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 22 2013

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Last modified April 18 03:33 EDT 2024. Contains 371767 sequences. (Running on oeis4.)