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!)
A251885 T(n,k)=Number of (n+2)X(k+2) 0..4 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime 9
5495, 11492, 11492, 20025, 16857, 20025, 49529, 36085, 36085, 49529, 117744, 100787, 94046, 100787, 117744, 256604, 242531, 237142, 237142, 242531, 256604, 676969, 725325, 848547, 1036785, 848547, 725325, 676969, 1694929, 2472269 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.....5495....11492.....20025......49529......117744.......256604.........676969

....11492....16857.....36085.....100787......242531.......725325........2472269

....20025....36085.....94046.....237142......848547......2892699........8113568

....49529...100787....237142....1036785.....4243461.....14269266.......64083601

...117744...242531....848547....4243461....17612152.....96631623......513228578

...256604...725325...2892699...14269266....96631623....615536028.....3186483082

...676969..2472269...8113568...64083601...513228578...3186483082....27379339268

..1694929..6408131..29479780..266275459..2133116461..21970640444...220952120769

..3850641.19769560.102515893..902777675.12086844180.143585893407..1384444723597

.10168955.78452511.303454217.4085369642.67036259385.763905174081.11996291910088

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..199

EXAMPLE

Some solutions for n=3 k=4

..0..3..4..0..1..4....0..2..3..0..4..1....1..0..1..1..0..1....1..1..1..1..1..3

..3..1..3..3..1..3....4..0..3..4..0..3....0..2..0..0..2..3....2..3..0..4..1..0

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

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

..3..1..1..1..1..3....4..0..3..4..0..3....0..2..0..3..2..0....4..1..0..4..3..0

CROSSREFS

Sequence in context: A203791 A137816 A138760 * A251878 A251877 A252312

Adjacent sequences:  A251882 A251883 A251884 * A251886 A251887 A251888

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Dec 10 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 24 10:40 EDT 2021. Contains 348225 sequences. (Running on oeis4.)