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A251265 Number of (n+1)X(5+1) 0..1 arrays with no 2X2 subblock having x11-x00 less than x10-x01 1
247, 1775, 13052, 100843, 790734, 6247708, 49523566, 393172015, 3123669457, 24825649060, 197336983976, 1568744380184, 12471338622425, 99147670133944, 788235696873315, 6266596802635677, 49820538186135672, 396082433072779827 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A251268

LINKS

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

FORMULA

Empirical: a(n) = 11*a(n-1) +25*a(n-2) -557*a(n-3) +417*a(n-4) +10537*a(n-5) -19095*a(n-6) -98114*a(n-7) +246975*a(n-8) +493227*a(n-9) -1642630*a(n-10) -1333320*a(n-11) +6536456*a(n-12) +1447446*a(n-13) -16694903*a(n-14) +2009237*a(n-15) +28399782*a(n-16) -9693504*a(n-17) -32722458*a(n-18) +16381621*a(n-19) +25543750*a(n-20) -16165287*a(n-21) -13265317*a(n-22) +10184940*a(n-23) +4371851*a(n-24) -4166286*a(n-25) -812484*a(n-26) +1089550*a(n-27) +50756*a(n-28) -174763*a(n-29) +8480*a(n-30) +15983*a(n-31) -1709*a(n-32) -738*a(n-33) +103*a(n-34) +13*a(n-35) -2*a(n-36)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A051153 A166399 A129133 * A001243 A048901 A223546

Adjacent sequences:  A251262 A251263 A251264 * A251266 A251267 A251268

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 01 2014

STATUS

approved

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Last modified November 12 09:01 EST 2019. Contains 329052 sequences. (Running on oeis4.)