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A205461 Number of (n+1)X4 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock differing from each horizontal or vertical neighbor 1
17920, 597288, 22414008, 843904488, 31625643196, 1185601231024, 44457471151176, 1666962268642872, 62503467236310480, 2343599232293623768, 87874636404562102448, 3294903243596850745368, 123544317033939549370912 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A205466

LINKS

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

EXAMPLE

Some solutions for n=4

..3..1..3..0....0..3..3..0....0..0..1..2....1..1..3..2....1..0..0..0

..1..1..0..0....1..0..1..2....3..3..0..3....0..0..1..1....0..3..3..2

..3..2..3..2....1..1..0..3....3..3..3..1....2..1..1..1....1..1..0..0

..2..2..1..1....1..1..3..2....0..2..1..1....1..1..1..2....1..1..3..1

..2..2..1..1....1..2..0..0....3..3..3..2....0..3..0..0....1..3..0..1

CROSSREFS

Sequence in context: A258950 A258949 A205950 * A345869 A345585 A345842

Adjacent sequences:  A205458 A205459 A205460 * A205462 A205463 A205464

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 27 2012

STATUS

approved

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Last modified August 15 22:45 EDT 2022. Contains 356150 sequences. (Running on oeis4.)