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A237867 Number of (n+1)X(7+1) 0..2 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
453088, 14144254, 466228162, 16245005586, 524709935082, 17294230106544, 584650294058044, 19984640052472780, 658291169914743394, 21904913699484406216, 739180534221657607156, 25003488678659571481024 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A237868

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..14

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A203785 A134960 A134888 * A234427 A205024 A207299

Adjacent sequences:  A237864 A237865 A237866 * A237868 A237869 A237870

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 14 2014

STATUS

approved

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Last modified May 18 03:30 EDT 2022. Contains 353783 sequences. (Running on oeis4.)