A210352 1/4 the number of (n+1)X6 0..3 arrays with every 2X2 subblock having one, two or three distinct clockwise edge differences

530580, 416960476, 320128196268, 248817068842201, 193382034306882852, 150365005774145044378, 116921261170364094516762, 90917952546400064866847175, 70698050852648393486040104724

Offset

1,1

Comments

Column 5 of A210355

Links

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

Example

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

Crossrefs

Sequence in context: A219334 A340304 A364903 * A321828 A038682 A017082

Adjacent sequences: A210349 A210350 A210351 * A210353 A210354 A210355

Keyword

nonn

Author

R. H. Hardin Mar 20 2012

Status

approved