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!)
A183588 1/24 the number of (n+1)X4 0..3 arrays with every 2X2 subblock containing exactly three distinct values 1
520, 27380, 1427084, 74491726, 3887550226, 202888369698, 10588548225946, 552606468835138, 28840014212057954, 1505133360863436226, 78551501834521854626, 4099529385937940277538, 213950603015925389996738 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A183594

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

FORMULA

Empirical: a(n)=51*a(n-1)+274*a(n-2)-10688*a(n-3)-31344*a(n-4)+590588*a(n-5)+1621408*a(n-6)-5825824*a(n-7)-7929216*a(n-8)+17443840*a(n-9)+6201344*a(n-10)-11993088*a(n-11)

EXAMPLE

Some solutions with a(1,1)=0 for 3X4

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

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

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

CROSSREFS

Sequence in context: A200427 A250678 A178269 * A168220 A293105 A286977

Adjacent sequences:  A183585 A183586 A183587 * A183589 A183590 A183591

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 05 2011

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 July 24 20:26 EDT 2021. Contains 346273 sequences. (Running on oeis4.)