A231111 Number of 5Xn 0..3 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero

0, 0, 208, 3936, 75346, 1608428, 34716434, 745738376, 16008740616, 343710683498, 7379808223044, 158453102807678, 3402179758062160, 73048972852021136, 1568451546991501818, 33676593841059669470, 723078147640347151670

Offset

1,3

Comments

Row 5 of A231108

Links

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

Example

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

Crossrefs

Sequence in context: A255074 A172967 A343507 * A339762 A223252 A223610

Adjacent sequences: A231108 A231109 A231110 * A231112 A231113 A231114

Keyword

nonn

Author

R. H. Hardin, Nov 03 2013

Status

approved