The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A285753

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Number of 4 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.
(history; published version)

#6 by Wesley Ivan Hurt at Sun Apr 05 23:22:18 EDT 2020

STATUS

editing

approved

#5 by Wesley Ivan Hurt at Sun Apr 05 23:22:12 EDT 2020

NAME

Number of 4Xn 4 X n 0..1 arrays with the number of 1s 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0s 0's adjacent to some 1.

STATUS

approved

editing

#4 by R. H. Hardin at Tue Apr 25 11:32:19 EDT 2017

STATUS

editing

approved

#3 by R. H. Hardin at Tue Apr 25 11:32:16 EDT 2017

LINKS

R. H. Hardin, <a href="/A285753/b285753.txt">Table of n, a(n) for n = 1..130</a>

#2 by R. H. Hardin at Tue Apr 25 11:31:57 EDT 2017

NAME

allocated for R. H. Hardin

Number of 4Xn 0..1 arrays with the number of 1s horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0s adjacent to some 1.

DATA

0, 52, 550, 8544, 119506, 1729212, 25450414, 379892924, 5724356600, 86870686676, 1325147534394, 20298649626624, 312012262489322, 4809932665481580, 74334215199171600, 1151283153187656576, 17865166558629037394

OFFSET

1,2

COMMENTS

Row 4 of A285750.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A285750.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Apr 25 2017

STATUS

approved

editing

#1 by R. H. Hardin at Tue Apr 25 11:23:09 EDT 2017

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved