The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A222645

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Number of nX4 0..2 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order
(history; published version)

#4 by R. H. Hardin at Wed Feb 27 08:40:23 EST 2013

STATUS

editing

approved

#3 by R. H. Hardin at Wed Feb 27 08:40:19 EST 2013

LINKS

R. H. Hardin, <a href="/A222645/b222645.txt">Table of n, a(n) for n = 1..128</a>

#2 by R. H. Hardin at Wed Feb 27 08:40:05 EST 2013

NAME

allocated for R. H. Hardin

Number of nX4 0..2 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order

DATA

4, 12, 61, 457, 3411, 31487, 317655, 3161392, 31436637, 315944445, 3182997999, 32059374557, 323386403994, 3267568146811, 33053624461081, 334704837151091, 3392894959638835, 34428005433287948, 349661755820884825

OFFSET

1,1

COMMENTS

Column 4 of A222649

EXAMPLE

Some solutions for n=3

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

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

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

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin Feb 27 2013

STATUS

approved

editing

#1 by R. H. Hardin at Wed Feb 27 08:35:31 EST 2013

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved