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A235543 Number of (n+1)X(3+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise 1
141, 1049, 8711, 61401, 429443, 2704866, 16395328, 93093885, 508540185, 2659704703, 13471014030, 66144806353, 316636996887, 1480951215734, 6789622700273, 30573699358527, 135511534381407, 592152291952613 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A235548

LINKS

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

R. H. Hardin, Empirical recurrence of order 77

FORMULA

Empirical recurrence of order 77 (see link above)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A186954 A235760 A201814 * A204469 A201553 A281560

Adjacent sequences:  A235540 A235541 A235542 * A235544 A235545 A235546

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 12 2014

STATUS

approved

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Last modified October 25 07:14 EDT 2021. Contains 348239 sequences. (Running on oeis4.)