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A237170 Number of (n+1)X(2+1) 0..3 arrays with the maximum minus the lower median of every 2X2 subblock equal 1
1696, 25384, 370670, 5876404, 93633848, 1522516754, 24903561376, 410933835890, 6814237433688, 113591643376192, 1900750202161774, 31918943879365146, 537518760877672914, 9074350190084095804, 153502724396796653946 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A237175

LINKS

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

R. H. Hardin, Empirical recurrence of order 75

FORMULA

Empirical recurrence of order 75 (see link above)

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A224605 A252570 A235182 * A301985 A237845 A340170

Adjacent sequences:  A237167 A237168 A237169 * A237171 A237172 A237173

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 04 2014

STATUS

approved

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Last modified January 19 00:03 EST 2021. Contains 340262 sequences. (Running on oeis4.)