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!)
A236723 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock equal 1
550, 1956, 6879, 26724, 105206, 437291, 1848980, 8110850, 36063603, 164600818, 757902648, 3556599303, 16776665346, 80262973548, 385100839073, 1867833712028, 9073256041802, 44449997869523, 217924654516054, 1075628687033984 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A236728

LINKS

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

R. H. Hardin, Empirical recurrence of order 81

FORMULA

Empirical recurrence of order 81 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A210399 A232314 A141547 * A189502 A190075 A234415

Adjacent sequences:  A236720 A236721 A236722 * A236724 A236725 A236726

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 30 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 August 4 07:32 EDT 2020. Contains 336201 sequences. (Running on oeis4.)