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A188103 Number of (n+3)X10 binary arrays with every 4X4 subblock commuting with each horizontal and vertical neighbor 4X4 subblock 1
17850, 2866, 4041, 5953, 8873, 10653, 11457, 12477, 14633, 17361, 20685, 25233, 34381, 45145, 57105, 71309, 94870, 122775, 155200, 194417, 252139, 324969, 414279, 524585, 676957, 872342, 1116632, 1421135, 1825426, 2345560, 3003909, 3832777 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A188105

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

FORMULA

Empirical: a(n)=2*a(n-1)-a(n-2)+a(n-4)-2*a(n-5)+a(n-6)+a(n-8)-a(n-9) for n>17

EXAMPLE

Some solutions for 5X10

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

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

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

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

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

CROSSREFS

Sequence in context: A235782 A235787 A235563 * A250078 A165106 A205661

Adjacent sequences:  A188100 A188101 A188102 * A188104 A188105 A188106

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 20 2011

STATUS

approved

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Last modified December 2 11:26 EST 2021. Contains 349440 sequences. (Running on oeis4.)