A205934 Number of (n+1)X8 0..3 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards

256692580, 618727630440, 1161408617136336, 1815101219263424368, 2520284777347122442980

Offset

1,1

Comments

Column 7 of A205935

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A271111 A204415 A246224 * A231202 A226448 A250433

Adjacent sequences: A205931 A205932 A205933 * A205935 A205936 A205937

Keyword

nonn

Author

R. H. Hardin Feb 01 2012

Status

approved