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Revision History for A286974 (Underlined text is an addition; strikethrough text is a deletion.)

Showing all changes.
A286974 Number of n X 3 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1.
(history; published version)
#6 by Wesley Ivan Hurt at Sun Apr 05 23:28:43 EDT 2020
STATUS

editing

approved

#5 by Wesley Ivan Hurt at Sun Apr 05 23:28:35 EDT 2020
NAME

Number of n X nX33 0..1 arrays with the number of 1s1's horizontally or vertically adjacent to some 0 two less than the number of 0s0's adjacent to some 1.

STATUS

approved

editing

#4 by R. H. Hardin at Wed May 17 14:48:10 EDT 2017
STATUS

editing

approved

#3 by R. H. Hardin at Wed May 17 14:48:07 EDT 2017
LINKS

R. H. Hardin, <a href="/A286974/b286974.txt">Table of n, a(n) for n = 1..210</a>

#2 by R. H. Hardin at Wed May 17 14:47:51 EDT 2017
NAME

allocated for R. H. Hardin

Number of nX3 0..1 arrays with the number of 1s horizontally or vertically adjacent to some 0 two less than the number of 0s adjacent to some 1.

DATA

0, 5, 50, 538, 3932, 32253, 238532, 1875212, 14222474, 110768815, 851356180, 6619388000, 51243150110, 398853561051, 3101596551513, 24188042117410, 188685917890136, 1474444397004861, 11529364760294089, 90260751863587788

OFFSET

1,2

COMMENTS

Column 3 of A286979.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A286979.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, May 17 2017

STATUS

approved

editing

#1 by R. H. Hardin at Wed May 17 14:45:20 EDT 2017
NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved

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Last modified August 30 07:09 EDT 2024. Contains 375532 sequences. (Running on oeis4.)