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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A261761 T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with each row and column prime, read as a binary number with top and left being the most significant bits. 9
2, 4, 4, 0, 20, 0, 11, 19, 19, 11, 0, 100, 19, 100, 0, 31, 165, 99, 99, 165, 31, 0, 353, 138, 2673, 138, 353, 0, 0, 885, 197, 4797, 4797, 197, 885, 0, 0, 3548, 380, 53564, 7014, 53564, 380, 3548, 0, 0, 8661, 2580, 174125, 82711, 82711, 174125, 2580, 8661, 0, 0 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

..2.....4.....0......11.......0.......31........0.......0.......0........0

..4....20....19.....100.....165......353......885....3548....8661....21544

..0....19....19......99.....138......197......380....2580....5892....10199

.11...100....99....2673....4797....53564...174125.1264975.5828759.28376885

..0...165...138....4797....7014....82711...229036.1430550.5704715

.31...353...197...53564...82711..8124875.25084172

..0...885...380..174125..229036.25084172

..0..3548..2580.1264975.1430550

..0..8661..5892.5828759

..0.21544.10199

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..83

EXAMPLE

Some solutions for n=4 k=4

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

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

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

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

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

CROSSREFS

Sequence in context: A199051 A300190 A099211 * A300269 A094225 A057277

Adjacent sequences:  A261758 A261759 A261760 * A261762 A261763 A261764

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Aug 31 2015

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 19 06:19 EDT 2018. Contains 316336 sequences. (Running on oeis4.)