A206106 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A206106

Number of (n+1) X 6 0..3 arrays with the number of clockwise edge increases in 2 X 2 subblocks nondecreasing, and counterclockwise edge increases nonincreasing, rightwards and downwards.

574364, 48804116, 5942161220, 816173366244, 115868265653308, 16603949695703620, 2387286725178431788, 343749924935562751988, 49536398579755532266076, 7141814076861761405917992

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 5 of A206109.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..70

EXAMPLE

Some solutions for n=4:

..3..3..1..2..3..3....1..3..0..1..0..1....2..2..3..1..2..2....2..3..0..1..0..0

..1..1..1..2..3..1....3..2..3..0..1..2....0..1..2..0..1..3....2..3..0..0..0..1

..2..1..2..2..2..2....0..3..1..2..3..3....1..2..1..3..0..0....2..3..3..3..3..1

..2..1..1..1..1..3....2..0..2..0..2..0....2..1..0..2..3..1....3..3..2..2..2..2

..1..1..2..1..0..3....1..2..3..2..1..0....3..2..1..0..2..1....0..3..2..0..0..3

CROSSREFS

Sequence in context: A237173 A090061 A146947 * A232350 A213965 A204731

Adjacent sequences: A206103 A206104 A206105 * A206107 A206108 A206109

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 03 2012

STATUS

approved