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A205518 Number of (n+1)X7 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock differing from each horizontal or vertical neighbor 1
160218, 6127554, 312856410, 15535355076, 764670893556, 37886453633808, 1873315597879056, 92643820648532838, 4582814248323919434, 226655621821802013390, 11210406172911766981086, 554474191273253102643840 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A205520

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..93

EXAMPLE

Some solutions for n=4

..0..1..1..1..0..1..0....2..1..0..2..0..1..2....0..0..2..2..2..1..1

..1..2..1..1..0..2..0....2..2..1..2..1..1..0....0..2..0..1..0..1..1

..1..1..0..0..2..2..1....1..0..0..0..0..2..2....1..0..0..2..0..2..0

..0..2..2..1..2..2..2....0..0..0..2..1..1..0....0..0..0..1..0..0..2

..1..1..0..1..0..2..2....2..1..1..0..1..1..2....0..0..1..2..0..0..1

CROSSREFS

Sequence in context: A013897 A205742 A206674 * A141816 A097626 A212081

Adjacent sequences:  A205515 A205516 A205517 * A205519 A205520 A205521

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 28 2012

STATUS

approved

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Last modified October 3 02:59 EDT 2022. Contains 357230 sequences. (Running on oeis4.)