The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A223468

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Number of nX2 0..2 arrays with no more than floor(nX2/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order
(history; published version)

#5 by R. H. Hardin at Wed Mar 20 10:30:24 EDT 2013

STATUS

editing

approved

#4 by R. H. Hardin at Wed Mar 20 10:29:56 EDT 2013

LINKS

R. H. Hardin, <a href="/A223468/b223468.txt">Table of n, a(n) for n = 1..210</a>

#3 by R. H. Hardin at Wed Mar 20 10:29:39 EDT 2013

NAME

allocated for R. H. Hardin

Number of nX2 0..2 arrays with no more than floor(nX2/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order

DATA

1, 6, 18, 58, 140, 352, 776, 1752, 3696, 7904, 16288, 33824, 68800, 140544, 283776, 574336, 1154816, 2324992, 4663808, 9361920, 18754560, 37584896, 75237376, 150640640, 301428736, 603217920, 1206755328, 2414288896, 4829265920

OFFSET

1,2

COMMENTS

Column 2 of A223473

EXAMPLE

Some solutions for n=4

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

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

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

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

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin Mar 20 2013

STATUS

approved

editing

#2 by R. H. Hardin at Wed Mar 20 10:28:03 EDT 2013

KEYWORD

allocating

allocated

#1 by R. H. Hardin at Wed Mar 20 10:28:03 EDT 2013

NAME

allocated for R. H. Hardin

KEYWORD

allocating

STATUS

approved