A221071 - OEIS

A221071

Sum of neighbor maps: number of nX7 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their king-move neighbors in a random 0..3 nX7 array

128, 1364, 2097152, 268435456, 25241048576, 4398046511104, 562949953421312, 70342550622109696

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 7 of A221072

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A133061 A188822 A181211 * A070055 A247930 A200842

Adjacent sequences: A221068 A221069 A221070 * A221072 A221073 A221074

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 31 2012

STATUS

approved