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A265617 Number of nX4 0..n*4-1 arrays with upper left zero and lower right n*4-1 and each element differing from its horizontal and diagonal neighbors by a power of two. 1
2, 908, 392320, 36820624, 283374980138, 281538588667512, 353827263949405920, 425853730907471177448, 889897682364060288415454, 1489134329684078361665704606, 2987652891220714880029028729466 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A265619.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..24

EXAMPLE

Some solutions for n=2

..0..4..3..1....0..2..6..2....0..4..6..2....0..4..3..4....0..1..3..1

..6..4..6..7....3..1..3..7....0..2..3..7....3..2..3..7....3..1..3..7

CROSSREFS

Cf. A265619.

Sequence in context: A261528 A265881 A203609 * A324597 A159723 A282346

Adjacent sequences:  A265614 A265615 A265616 * A265618 A265619 A265620

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 10 2015

STATUS

approved

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Last modified November 27 20:49 EST 2021. Contains 349395 sequences. (Running on oeis4.)