A231060 Number of nX5 0..3 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero

0, 68, 1272, 27346, 585880, 12582344, 270096962, 5799242344, 124514793312, 2673473185328, 57402651030122, 1232504863875396, 26463395615097866, 568201785697961358, 12199995225532283910, 261948999886945680148

Offset

1,2

Comments

Column 5 of A231063

Links

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

Example

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

Crossrefs

Sequence in context: A163728 A168179 A283575 * A245875 A329444 A230687

Adjacent sequences: A231057 A231058 A231059 * A231061 A231062 A231063

Keyword

nonn

Author

R. H. Hardin, Nov 03 2013

Status

approved