A210073 1/4 the number of (n+1)X5 0..3 arrays with every 2X2 subblock having one or three distinct clockwise edge differences

27129, 4437262, 707627792, 114628150378, 18568897568014, 3010470408635630, 488107505505461510, 79144584564609543464, 12833111893822360727629, 2080870815907855835416746, 337410806008722400116179002

Offset

1,1

Comments

Column 4 of A210077

Links

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

Example

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

Crossrefs

Sequence in context: A164522 A037045 A186481 * A236275 A228562 A224466

Adjacent sequences: A210070 A210071 A210072 * A210074 A210075 A210076

Keyword

nonn

Author

R. H. Hardin Mar 17 2012

Status

approved