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A205254 Number of (n+1)X8 0..1 arrays with the number of clockwise edge increases in every 2X2 subblock the same 1
8752, 323856, 12301024, 471988176, 18189909484, 702420750928, 27149753088796, 1049837466171440, 40603753889665636, 1570549319417597660, 60751409051086135564, 2350012855527394133456, 90905131505907584858392 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A205255

LINKS

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

FORMULA

Empirical: a(n) = 106*a(n-1) -4578*a(n-2) +110127*a(n-3) -1685691*a(n-4) +17662632*a(n-5) -132490685*a(n-6) +732439565*a(n-7) -3041749572*a(n-8) +9607185471*a(n-9) -23244897123*a(n-10) +43214022033*a(n-11) -61676422325*a(n-12) +67255934696*a(n-13) -55515488409*a(n-14) +34166147646*a(n-15) -15313024644*a(n-16) +4816467696*a(n-17) -999456992*a(n-18) +121777664*a(n-19) -6527616*a(n-20)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A269108 A269288 A234148 * A061665 A237484 A255758

Adjacent sequences:  A205251 A205252 A205253 * A205255 A205256 A205257

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 24 2012

STATUS

approved

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Last modified June 20 06:56 EDT 2021. Contains 345157 sequences. (Running on oeis4.)