The On-Line Encyclopedia of Integer Sequences (OEIS)

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A303893

Number of nX5 0..1 arrays with every element unequal to 1, 2, 3 or 4 king-move adjacent elements, with upper left element zero.
(history; published version)

#4 by R. H. Hardin at Wed May 02 08:03:35 EDT 2018

STATUS

editing

approved

#3 by R. H. Hardin at Wed May 02 08:03:32 EDT 2018

LINKS

R. H. Hardin, <a href="/A303893/b303893.txt">Table of n, a(n) for n = 1..210</a>

R. H. Hardin, <a href="/A303893/a303893.txt">Empirical recurrence of order 92</a>

#2 by R. H. Hardin at Wed May 02 08:02:55 EDT 2018

NAME

allocated for R. H. Hardin

Number of nX5 0..1 arrays with every element unequal to 1, 2, 3 or 4 king-move adjacent elements, with upper left element zero.

DATA

3, 313, 842, 7421, 29479, 200144, 992789, 5930552, 32529473, 183511110, 1040095115, 5814425752, 32991537449, 185215371545, 1046962946963, 5898040401117, 33274465102765, 187679674103195, 1058350295231955

OFFSET

1,1

COMMENTS

Column 5 of A303896.

FORMULA

Empirical recurrence of order 92 (see link above)

EXAMPLE

Some solutions for n=5

..0..1..1..0..0. .0..0..1..1..1. .0..0..0..1..1. .0..1..1..1..0

..1..1..1..1..0. .1..0..0..0..0. .1..0..1..1..0. .1..1..0..0..0

..0..1..1..1..1. .0..1..0..0..1. .0..1..1..1..0. .1..0..0..0..1

..0..0..0..1..0. .1..1..1..1..0. .0..1..1..1..0. .0..0..1..1..0

..1..0..0..0..1. .1..0..0..1..1. .0..1..1..0..0. .0..1..1..1..1

CROSSREFS

Cf. A303896.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, May 02 2018

STATUS

approved

editing

#1 by R. H. Hardin at Wed May 02 07:59:10 EDT 2018

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved