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!)
A222794 T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order 14
1, 0, 0, 0, 3, 0, 3, 4, 8, 0, 4, 18, 34, 55, 0, 8, 62, 275, 582, 294, 0, 10, 302, 888, 5896, 3800, 1883, 0, 55, 1246, 14292, 77978, 137804, 92642, 11920, 0, 72, 6094, 62072, 1026076, 1615706, 3315998, 589134, 78255, 0, 294, 26914, 1144030, 16057219 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Table starts

.1.........0............0...............3.................4..................8

.0.........3............4..............18................62................302

.0.........8...........34.............275...............888..............14292

.0........55..........582............5896.............77978............1026076

.0.......294.........3800..........137804...........1615706...........88097352

.0......1883........92642.........3315998.........163288090.........8113737592

.0.....11920.......589134........80934417........3723507945.......762956665320

.0.....78255.....15697114......1992934141......374218329866.....72357582862167

.0....517050....101205850.....49390328481.....8769044681276...6893999224041770

.0...3451712...2768968458...1230248849616...883217207685508.659082936314507965

.0..23156964..17982090240..30772191192457.20907867146102343

.0.156076271.499074464184.772421301648384

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..125

EXAMPLE

Some solutions for n=3 k=4

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

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

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

CROSSREFS

Row 1 is A222269

Sequence in context: A277092 A060858 A222690 * A127749 A198431 A138188

Adjacent sequences:  A222791 A222792 A222793 * A222795 A222796 A222797

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 05 2013

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 May 17 21:11 EDT 2021. Contains 343990 sequences. (Running on oeis4.)