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A220803 Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal and vertical neighbors in a random 0..3 nX4 array 0
16, 256, 4096, 62648, 1048576, 16777216, 268435456, 4294967296, 68700598768, 1099511627776, 17592186044416, 281474976710656, 4503599627370496, 72057490800855040, 1152921504606846976 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A220805

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A267792 A220252 A267976 * A229101 A220175 A001025

Adjacent sequences:  A220800 A220801 A220802 * A220804 A220805 A220806

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 21 2012

STATUS

approved

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Last modified September 28 20:34 EDT 2022. Contains 357081 sequences. (Running on oeis4.)