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A219424 Unchanging value maps: number of 4Xn binary arrays indicating the locations of corresponding elements unequal to no horizontal or antidiagonal neighbor in a random 0..2 4Xn array 0
1, 65, 436, 3617, 28154, 218838, 1709703, 13384389, 104853209, 820979848, 6427053212, 50316786006, 393951173336, 3084409493138, 24148717621856, 189066773722441, 1480260894360447, 11589420628440440 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 4 of A219421

LINKS

Table of n, a(n) for n=1..18.

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A069758 A116678 A218845 * A020292 A251158 A251151

Adjacent sequences:  A219421 A219422 A219423 * A219425 A219426 A219427

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 19 2012

STATUS

approved

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Last modified March 28 07:59 EDT 2020. Contains 333079 sequences. (Running on oeis4.)