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A185773 Number of (n+1)X4 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum 1
3844, 89118, 2046098, 48744342, 1154712762, 27239862108, 641595944400, 15156754839024, 357869357090800, 8446854770875602, 199334639825139922, 4705555692884330894, 111074885127703334276, 2621814014876365014966 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A185777

LINKS

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

EXAMPLE

Some solutions for 3X4

..2..1..0..2....2..1..1..1....2..2..0..1....1..1..2..2....0..0..0..1

..1..1..0..2....2..0..0..1....2..0..0..2....0..1..1..1....0..1..2..1

..0..0..2..1....1..1..2..2....0..2..1..2....0..1..1..2....1..2..2..0

CROSSREFS

Sequence in context: A234827 A253291 A253161 * A031560 A180505 A252878

Adjacent sequences:  A185770 A185771 A185772 * A185774 A185775 A185776

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 03 2011

STATUS

approved

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Last modified May 19 13:24 EDT 2022. Contains 353833 sequences. (Running on oeis4.)