login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A237078 Number of (n+1)X(2+1) 0..2 arrays colored with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock 1
484, 4526, 42300, 395028, 3675408, 34334240, 320714572, 2993549732, 27915633640, 260587380516, 2432846381316, 22705793081876, 211866942104136, 1977464243096648, 18457732328302972, 172266108318326624 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A237082

LINKS

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

FORMULA

Empirical: a(n) = 10*a(n-2) +200*a(n-3) +3494*a(n-4) +10363*a(n-5) +24691*a(n-6) +34689*a(n-7) -505130*a(n-8) -1188173*a(n-9) +1553345*a(n-10) +3053671*a(n-11) -3123651*a(n-12) -5222443*a(n-13) +618387*a(n-14) +19081478*a(n-15) +50000542*a(n-16) +154214784*a(n-17) +97630438*a(n-18) -137167730*a(n-19) +484064408*a(n-20) -223962514*a(n-21) -2119272884*a(n-22) +140443024*a(n-23) +730934940*a(n-24) -2147396648*a(n-25) -549613744*a(n-26) +1151284384*a(n-27) +1359699984*a(n-28) +1254555424*a(n-29) -443113344*a(n-30) -741621696*a(n-31) -65819904*a(n-32) +117950464*a(n-33) +33722368*a(n-34) +2539520*a(n-35)

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A281398 A014803 A236647 * A085120 A250614 A234780

Adjacent sequences:  A237075 A237076 A237077 * A237079 A237080 A237081

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 03 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 October 14 01:36 EDT 2019. Contains 327994 sequences. (Running on oeis4.)