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A205241 Number of (n+1)X4 0..2 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in each of its horizontal and vertical neighbors 1
2990, 36478, 515162, 7051340, 97718448, 1334713506, 18384097800, 251875514320, 3461757498588, 47498508227712, 652418339064389, 8955881958241476, 122986967957641438, 1688504461834087204, 23185409190832766293 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A205246
LINKS
EXAMPLE
Some solutions for n=4
..1..0..0..0....0..0..2..2....0..0..2..1....0..1..2..2....0..2..1..2
..1..2..0..0....1..2..0..0....1..2..0..0....0..0..1..1....1..1..1..1
..0..0..2..0....2..0..0..2....1..2..2..2....2..1..2..2....0..0..1..2
..1..1..2..0....2..2..1..2....1..0..0..1....1..0..2..0....2..0..1..0
..2..1..2..1....0..0..1..2....2..2..0..1....0..1..2..2....2..0..2..2
CROSSREFS
Sequence in context: A108926 A159731 A221725 * A317398 A346221 A253962
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 24 2012
STATUS
approved

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Last modified March 4 05:23 EST 2024. Contains 370522 sequences. (Running on oeis4.)