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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A204572 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order 9
8, 42, 42, 256, 482, 256, 1682, 6112, 6112, 1682, 11448, 80518, 158981, 80518, 11448, 79162, 1075080, 4220392, 4220392, 1075080, 79162, 551216, 14421190, 112592256, 226207388, 112592256, 14421190, 551216, 3849762, 193752824, 3007468553 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......8.........42...........256.............1682...............11448

......42........482..........6112............80518.............1075080

.....256.......6112........158981..........4220392...........112592256

....1682......80518.......4220392........226207388.........12184154082

...11448....1075080.....112592256......12184154082.......1331721926667

...79162...14421190....3007468553.....657035534014.....146012317377342

..551216..193752824...80358249724...35439471578008...16024704563231697

.3849762.2604524150.2147311723128.1911668983879844.1759237470505955994

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..144

EXAMPLE

Some solutions for n=4 k=3

..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..1

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

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

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

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

CROSSREFS

Sequence in context: A228480 A067301 A295936 * A086392 A234860 A292059

Adjacent sequences:  A204569 A204570 A204571 * A204573 A204574 A204575

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 16 2012

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 21 19:14 EDT 2019. Contains 328308 sequences. (Running on oeis4.)