A209712 1/4 the number of (n+1) X 5 0..3 arrays with every 2 X 2 subblock having distinct clockwise edge differences.

8876, 614935, 40731729, 2744311427, 183988612894, 12365282426546, 830023337140244, 55752055566749390, 3743494074063656049, 251407614309375778551, 16882345627898370229840, 1133739174494213238538448

Offset

1,1

Comments

Column 4 of A209716.

Links

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

Example

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

Crossrefs

Cf. A209716.

Sequence in context: A116295 A115427 A236614 * A282059 A167290 A043524

Adjacent sequences: A209709 A209710 A209711 * A209713 A209714 A209715

Keyword

nonn

Author

R. H. Hardin, Mar 11 2012

Status

approved