A185928 Number of (n+1)X5 0..3 arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace

601280, 199644672, 67954333216, 23071825269024, 7834998846007456, 2660771010874885728, 903599949050079304640, 306863268993289004333312, 104211014202469023769406752, 35390144409983069199319892064

Offset

1,1

Comments

Column 4 of A185933

Links

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

Example

Some solutions for 3X5
..2..2..0..3..0....2..0..3..0..2....2..2..2..3..2....0..0..2..2..3
..0..0..2..0..3....0..0..1..0..1....0..0..2..0..3....0..2..0..0..1
..0..0..1..2..3....0..0..3..1..3....0..0..2..3..1....0..0..0..0..2

Crossrefs

Sequence in context: A304000 A206412 A235257 * A270262 A238310 A237471

Adjacent sequences: A185925 A185926 A185927 * A185929 A185930 A185931

Keyword

nonn

Author

R. H. Hardin Feb 06 2011

Status

approved