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A237506 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
1342, 9108, 62031, 462206, 3489965, 25188644, 180995914, 1323886040, 9750862216, 70896853212, 515780878618, 3760128852508, 27527933916550, 200444657289112, 1462699965537270, 10656195549646172, 77892908821912858, 567346977263750148 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A237511

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A023064 A252266 A253114 * A264385 A167437 A259675

Adjacent sequences: A237503 A237504 A237505 * A237507 A237508 A237509

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 08 2014

STATUS

approved

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Last modified January 31 01:17 EST 2023. Contains 359947 sequences. (Running on oeis4.)