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A185797 Number of (n+1) X 9 binary arrays with no 2 X 2 subblock sum equal to any horizontal or vertical neighbor 2 X 2 subblock sum. 1
11220, 20864, 47776, 164576, 433296, 1379208, 3629540, 13289252, 35756268, 128976744, 346446144, 1333284060, 3588481008, 13880081488, 37224984364, 148837476180, 398218723908, 1607711747604, 4285914451420, 17630641010960 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 8 of A185798.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..138

EXAMPLE

Some solutions for 3 X 9

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

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

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

CROSSREFS

Cf. A185798.

Sequence in context: A190793 A247925 A271582 * A256355 A135015 A104316

Adjacent sequences:  A185794 A185795 A185796 * A185798 A185799 A185800

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 04 2011

STATUS

approved

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Last modified May 22 23:18 EDT 2022. Contains 353959 sequences. (Running on oeis4.)