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A267786 Number of nX6 0..1 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value. 1
51, 2601, 22110, 211555, 912667, 4245574, 13126812, 42012357, 106570618, 272337497, 604928942, 1330976409, 2684633348, 5309403837, 9945849384, 18160668025, 32072067434, 55037496090, 92610159756, 151216855067 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A267788.

LINKS

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

FORMULA

Empirical: a(n) = 2*a(n-1) +10*a(n-2) -22*a(n-3) -44*a(n-4) +110*a(n-5) +110*a(n-6) -330*a(n-7) -165*a(n-8) +660*a(n-9) +132*a(n-10) -924*a(n-11) +924*a(n-13) -132*a(n-14) -660*a(n-15) +165*a(n-16) +330*a(n-17) -110*a(n-18) -110*a(n-19) +44*a(n-20) +22*a(n-21) -10*a(n-22) -2*a(n-23) +a(n-24) for n>27

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A267788.

Sequence in context: A210080 A218752 A097836 * A267733 A238603 A128917

Adjacent sequences:  A267783 A267784 A267785 * A267787 A267788 A267789

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 20 2016

STATUS

approved

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Last modified October 24 20:35 EDT 2021. Contains 348233 sequences. (Running on oeis4.)