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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A236251 Number of (n+1)X(1+1) 0..3 arrays colored with the maximum plus the upper median plus the lower median of every 2X2 subblock 1
256, 3208, 40120, 505708, 6373768, 80221804, 1009767552, 12713539468, 160066410336, 2015160447836, 25370112054552, 319404088858652, 4021218129810712, 50625997233104140, 637367333451485952 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A236254

LINKS

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

R. H. Hardin, Empirical recurrence of order 48

FORMULA

Empirical recurrence of order 48 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A205033 A236130 A236254 * A344304 A070056 A185575

Adjacent sequences:  A236248 A236249 A236250 * A236252 A236253 A236254

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 21 2014

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 January 24 04:47 EST 2022. Contains 350534 sequences. (Running on oeis4.)