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A238145 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 6
256, 1810, 1810, 12981, 22698, 12981, 94458, 292176, 292176, 94458, 687254, 3817216, 6799917, 3817216, 687254, 4977790, 49554382, 160133604, 160133604, 49554382, 4977790, 36125717, 642717388, 3756442630, 6863396252, 3756442630 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......256.........1810..........12981.............94458...............687254

......1810........22698.........292176...........3817216.............49554382

.....12981.......292176........6799917.........160133604...........3756442630

.....94458......3817216......160133604........6863396252.........292335443616

....687254.....49554382.....3756442630......292335443616.......22569314353994

...4977790....642717388....88011173220....12430740302096.....1735590139495580

..36125717...8350461834..2067349618435...529306438594610...133985522364550954

.262009080.108497620520.48473348771212.22541568260503428.10333049915756021016

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..83

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 34]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A205937 A237911 A237905 * A238140 A238298 A238293

Adjacent sequences:  A238142 A238143 A238144 * A238146 A238147 A238148

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 18 2014

STATUS

approved

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Last modified October 3 04:46 EDT 2022. Contains 357230 sequences. (Running on oeis4.)