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A238050 Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
1760, 20732, 249664, 3029204, 36751872, 446229436, 5413951288, 65636758792, 796414874192, 9671088645980, 117339031195880, 1422572305954956, 17261016589311336, 209605459590414108, 2543137127074039224 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A238054

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 21904*a(n-4) -5020646*a(n-8) +499932588*a(n-12) -25264518617*a(n-16) +465397769602*a(n-20) -8930151275492*a(n-24) -30272393514402*a(n-28) -940962161512745*a(n-32) -9250969739341106*a(n-36) +3202689128170244*a(n-40) +45277613917985096*a(n-44) -41338678777674816*a(n-48) +4676290285004864*a(n-52) -425308924384640*a(n-56) +154898627924480*a(n-60) for n>64

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A031802 A020419 A141287 * A213804 A252309 A141039

Adjacent sequences:  A238047 A238048 A238049 * A238051 A238052 A238053

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 17 2014

STATUS

approved

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Last modified July 23 22:49 EDT 2019. Contains 325278 sequences. (Running on oeis4.)