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A237635 Number of (n+1)X(6+1) 0..2 arrays with the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
11936, 8594, 2900, 4440, 5656, 9368, 11984, 20756, 28336, 47134, 59920, 104172, 141680, 235572, 299600, 520860, 708400, 1177860, 1498000, 2604300, 3542000, 5889300, 7490000, 13021500, 17710000, 29446500, 37450000, 65107500, 88550000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A237637

LINKS

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

FORMULA

Empirical: a(n) = 5*a(n-4) for n>14

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A230680 A218458 A321157 * A344629 A252948 A065701

Adjacent sequences:  A237632 A237633 A237634 * A237636 A237637 A237638

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 10 2014

STATUS

approved

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Last modified January 28 22:30 EST 2022. Contains 350669 sequences. (Running on oeis4.)