The On-Line Encyclopedia of Integer Sequences (OEIS)

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A209913

T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences
(history; published version)

#5 by Russ Cox at Sat Mar 31 12:37:30 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Mar 15 2012

Discussion

Sat Mar 31

12:37

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

#4 by Ron Hardin at Thu Mar 15 05:40:39 EDT 2012

STATUS

editing

approved

#3 by Ron Hardin at Thu Mar 15 05:40:34 EDT 2012

LINKS

R. H. Hardin, <a href="/A209913/b209913.txt">Table of n, a(n) for n = 1..144</a>

#2 by Ron Hardin at Thu Mar 15 05:40:13 EDT 2012

NAME

allocated for Ron HardinT(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences

DATA

62, 562, 562, 5008, 13098, 5008, 44770, 295448, 295448, 44770, 399930, 6711168, 16664508, 6711168, 399930, 3573388, 152153160, 948609890, 948609890, 152153160, 3573388, 31926146, 3452051294, 53888573444, 135833193008, 53888573444

OFFSET

1,1

COMMENTS

Table starts

........62...........562.............5008................44770

.......562.........13098...........295448..............6711168

......5008........295448.........16664508............948609890

.....44770.......6711168........948609890.........135833193008

....399930.....152153160......53888573444.......19391662870652

...3573388....3452051294....3063300023090.....2771380588485262

..31926146...78298719958..174099838817590...395928291655518846

.285247762.1776153151954.9895452271443782.56572313966664992566

EXAMPLE

Some solutions for n=4 k=3

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

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

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

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

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

KEYWORD

allocated

nonn,tabl

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Mar 15 2012

STATUS

approved

editing

#1 by Ron Hardin at Thu Mar 15 05:26:36 EDT 2012

NAME

allocated for Ron Hardin

KEYWORD

allocated

STATUS

approved