The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A199258

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A199258

Number of 3nX2 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor
(history; published version)

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

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Nov 04 2011

Discussion

Sat Mar 31

12:36

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

#5 by Ron Hardin at Fri Nov 04 10:52:52 EDT 2011

STATUS

editing

approved

#4 by Ron Hardin at Fri Nov 04 10:52:48 EDT 2011

LINKS

R. H. Hardin, <a href="/A199258/b199258.txt">Table of n, a(n) for n = 1..99</a>

#3 by Ron Hardin at Fri Nov 04 10:52:25 EDT 2011

NAME

allocated for Ron HardinNumber of 3nX2 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor

DATA

3, 36, 449, 6024, 83890, 1203424, 17634348, 262690636, 3964097574, 60448089272, 929736185578, 14403575178424, 224514368663504, 3518109050510528, 55381725681044520, 875329086340050012, 13884232495508832254

OFFSET

1,1

COMMENTS

3n elements of column 2 of A199261

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

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

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

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

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Nov 04 2011

STATUS

approved

editing

#2 by Ron Hardin at Fri Nov 04 10:50:46 EDT 2011

KEYWORD

allocating

allocated

#1 by Ron Hardin at Fri Nov 04 10:50:46 EDT 2011

NAME

allocated for Ron Hardin

KEYWORD

allocating

STATUS

approved