A209909 Half the number of (n+1)X5 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences

44770, 6711168, 948609890, 135833193008, 19391662870652, 2771380588485262, 395928291655518846, 56572313966664992566, 8082834582799800606818, 1154877996377518700415076, 165007101830680869540237766

Offset

1,1

Comments

Column 4 of A209913

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..1..1..3..3..0....3..0..0..1..1....0..2..2..1..0....1..0..0..0..0
..3..0..1..0..2....1..3..1..3..0....3..3..0..2..3....3..1..3..1..3
..1..1..2..1..3....0..0..3..1..1....0..1..3..3..2....1..3..1..3..0
..3..0..1..0..2....3..1..0..0..3....3..1..0..1..3....1..0..3..0..1
..1..3..2..1..3....0..3..3..2..2....3..0..1..3..1....0..1..1..0..3

Crossrefs

Sequence in context: A248066 A252147 A225814 * A251790 A197421 A197614

Adjacent sequences: A209906 A209907 A209908 * A209910 A209911 A209912

Keyword

nonn

Author

R. H. Hardin Mar 15 2012

Status

approved