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A235655 Number of (n+1)X(3+1) 0..1 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise 1
160, 1368, 11236, 85700, 627189, 4396769, 29920256, 198335901, 1289725913, 8254247466, 52203733525, 327041542672, 2034356588846, 12585148968678, 77538471852097, 476245181222104, 2918495960358086, 17854830618129496 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A235660

LINKS

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

R. H. Hardin, Empirical recurrence of order 69

FORMULA

Empirical recurrence of order 69 (see link above)

EXAMPLE

Some solutions for n=4

..1..0..1..1....1..0..1..1....0..0..0..1....0..1..0..1....0..0..1..0

..0..0..0..1....0..0..0..1....1..0..1..0....0..0..1..1....0..0..0..0

..0..1..0..1....0..0..1..1....1..1..0..0....0..1..1..0....1..0..0..0

..0..0..1..1....0..1..1..1....0..1..0..1....1..1..1..1....0..0..0..0

..0..1..0..1....0..0..0..1....1..1..0..0....0..0..0..1....0..0..1..1

CROSSREFS

Sequence in context: A166778 A236518 A120103 * A281404 A127409 A013447

Adjacent sequences:  A235652 A235653 A235654 * A235656 A235657 A235658

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 13 2014

STATUS

approved

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Last modified February 25 12:28 EST 2021. Contains 341606 sequences. (Running on oeis4.)