A232387 Number of (n+1)X(4+1) 0..3 arrays with every element next to itself plus and minus one within the range 0..3 horizontally, vertically or antidiagonally, with no adjacent elements equal

190, 840, 4646, 28752, 178352, 1186624, 7492900, 49210408, 321677208, 2090311668, 13716554586, 89613720870, 585910981094, 3837901839346, 25102457008084, 164324415802048, 1075812931900256, 7041165516588160, 46098895792514794

Offset

1,1

Comments

Column 4 of A232391

Links

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

Example

Some solutions for n=5
..0..1..3..0..1....0..1..2..0..1....0..2..3..2..1....0..3..0..3..0
..3..2..1..3..2....2..3..1..2..0....1..0..1..3..0....1..2..1..2..1
..1..3..2..1..0....1..2..0..3..2....3..2..0..1..2....0..3..0..3..2
..0..1..3..2..3....0..3..1..0..1....1..3..2..3..0....1..2..1..0..3
..3..2..1..0..1....1..2..3..2..3....0..1..0..2..1....3..0..3..1..2
..1..0..3..2..0....0..1..0..1..0....3..2..1..3..0....2..1..2..0..3

Crossrefs

Sequence in context: A097647 A248995 A258725 * A296521 A223462 A184192

Adjacent sequences: A232384 A232385 A232386 * A232388 A232389 A232390

Keyword

nonn

Author

R. H. Hardin, Nov 23 2013

Status

approved