The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A198207 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A198207

Number of 2nX6 0..3 arrays with values 0..3 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors
(history; published version)

#5 by Russ Cox at Sat Mar 31 12:36:34 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Oct 22 2011

Discussion

Sat Mar 31

12:36

OEIS Server: https://oeis.org/edit/global/875

#4 by Ron Hardin at Sat Oct 22 05:02:19 EDT 2011

STATUS

editing

approved

#3 by Ron Hardin at Sat Oct 22 05:02:15 EDT 2011

LINKS

R. H. Hardin, <a href="/A198207/b198207.txt">Table of n, a(n) for n = 1..31</a>

#2 by Ron Hardin at Sat Oct 22 05:01:52 EDT 2011

NAME

allocated for Ron HardinNumber of 2nX6 0..3 arrays with values 0..3 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors

DATA

658, 50729, 3603458, 276030525, 21989253467, 1791994477631, 148260119458624, 12388301166414053, 1042156486950351473, 88068293220220746165, 7464940011082766165729, 634039417143962239696103

OFFSET

1,1

COMMENTS

Column 3 of A198209

EXAMPLE

Some solutions for n=4

..0..1..0..1..0..2....0..1..0..1..0..2....0..1..0..1..0..2....0..1..0..1..0..1

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

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

..1..2..2..2..2..3....1..2..2..0..0..2....1..2..2..0..0..2....1..2..2..2..2..2

..1..2..1..1..2..3....1..2..2..0..0..2....1..2..2..0..0..2....1..2..3..3..3..3

..0..2..1..1..2..2....2..0..0..3..3..1....3..3..3..3..3..3....2..2..3..1..1..2

..0..2..2..2..3..3....2..0..0..3..3..1....2..2..2..2..2..2....1..1..3..1..1..2

..1..0..0..2..3..2....0..3..3..2..2..3....1..0..0..1..1..0....0..1..3..2..2..0

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Oct 22 2011

STATUS

approved

editing

#1 by Ron Hardin at Sat Oct 22 04:57:57 EDT 2011

NAME

allocated for Ron Hardin

KEYWORD

allocated

STATUS

approved