login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A206594 Number of (n+1)X2 0..3 arrays with every 2X3 or 3X2 subblock having no more than three equal edges, and new values 0..3 introduced in row major order 1
15, 171, 2532, 38810, 597829, 9217211, 142130380, 2191712741, 33797293408, 521171299118, 8036724854275, 123930361123673, 1911068840711956, 29469647972560031, 454436874891109270, 7007646425074694210 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A206600

LINKS

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

FORMULA

Empirical: a(n) = 16*a(n-1) -14*a(n-2) +98*a(n-3) -312*a(n-4) +114*a(n-5) -585*a(n-6) +72*a(n-7) -324*a(n-8) for n>9

EXAMPLE

Some solutions for n=4

..0..1....0..1....0..0....0..0....0..0....0..0....0..1....0..0....0..0....0..1

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

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

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

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

CROSSREFS

Sequence in context: A016172 A016225 A058687 * A152586 A339547 A082678

Adjacent sequences:  A206591 A206592 A206593 * A206595 A206596 A206597

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 16 05:41 EDT 2021. Contains 348035 sequences. (Running on oeis4.)