A186553 - OEIS

A186553

T(n,k)=1/8192 the number of (n+2)X(k+2) 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace

0, 290, 290, 2972, 19016, 2972, 168200, 1279862, 1279862, 168200, 3090668, 88662978, 177942264, 88662978, 3090668, 111188198, 6215002266, 31976088817, 31976088817, 6215002266, 111188198, 2585394080, 435599518160, 5253540132125

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Table starts

...........0..............290.................2972................168200

.........290............19016..............1279862..............88662978

........2972..........1279862............177942264...........31976088817

......168200.........88662978..........31976088817........13544245035035

.....3090668.......6215002266........5253540132125......5541254050323697

...111188198.....435599518160......891778365437358...2292090739550640497

..2585394080...30577245619492...149628929202973235.945658119457845662613

.78931270418.2145961447892386.25212444270769802733

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..59

EXAMPLE

Some solutions for 5X4

..0..2..0..0....0..2..0..0....2..2..0..0....0..2..0..0....0..2..0..0

..0..2..0..0....2..0..0..0....0..0..0..0....2..2..0..0....0..0..0..0

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

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

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

CROSSREFS

Sequence in context: A180701 A091680 A129245 * A075420 A075421 A332229

Adjacent sequences: A186550 A186551 A186552 * A186554 A186555 A186556

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Feb 23 2011

STATUS

approved