login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A251499 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock summing to 4 5 6 7 or 8 8
186, 2270, 2270, 27844, 86946, 27844, 341718, 3361296, 3361296, 341718, 4194002, 130169514, 411510096, 130169514, 4194002, 51474508, 5042543734, 50511532876, 50511532876, 5042543734, 51474508, 631765770, 195351371872, 6203258853660 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.....186.......2270.........27844...........341718.............4194002

....2270......86946.......3361296........130169514..........5042543734

...27844....3361296.....411510096......50511532876.......6203258853660

..341718..130169514...50511532876...19669407965330....7664671702820686

.4194002.5042543734.6203258853660.7664671702820686.9478728485533475524

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..112

FORMULA

Empirical for column k:

k=1: a(n) = 13*a(n-1) -5*a(n-2) -52*a(n-3) +48*a(n-4)

k=2: [order 12]

k=3: [order 52]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A286006 A234108 A200199 * A251492 A289301 A147817

Adjacent sequences:  A251496 A251497 A251498 * A251500 A251501 A251502

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Dec 03 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 January 17 14:07 EST 2022. Contains 350400 sequences. (Running on oeis4.)