login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A207717 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically 12
2, 4, 4, 6, 16, 6, 10, 36, 36, 9, 16, 100, 114, 81, 14, 26, 256, 450, 387, 196, 22, 42, 676, 1644, 2205, 1414, 484, 35, 68, 1764, 6186, 12015, 11970, 5302, 1225, 56, 110, 4624, 23010, 66339, 97580, 66946, 20265, 3136, 90, 178, 12100, 85992, 364869, 805154 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

..2....4.....6......10.......16.........26..........42............68

..4...16....36.....100......256........676........1764..........4624

..6...36...114.....450.....1644.......6186.......23010.........85992

..9...81...387....2205....12015......66339......364869.......2009223

.14..196..1414...11970....97580.....805154.....6614706......54438356

.22..484..5302...66946...820820...10150118...125165018....1545006848

.35.1225.20265..383845..7070805..131365535..2433018665...45118588165

.56.3136.78120.2221688.61530000.1717508184.47808913432.1332236625328

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..763

EXAMPLE

Some solutions for n=4 k=3

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

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

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

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

CROSSREFS

Column 1 is A001611(n+2)

Column 2 is A207436

Row 1 is A006355(n+2)

Row 2 is A206981

Sequence in context: A208420 A208028 A208369 * A208078 A208780 A206987

Adjacent sequences:  A207714 A207715 A207716 * A207718 A207719 A207720

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Feb 19 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 December 4 17:03 EST 2021. Contains 349526 sequences. (Running on oeis4.)