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!)
A234036 T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1 9
61, 307, 307, 1543, 3059, 1543, 7783, 30263, 30263, 7783, 39331, 300597, 591711, 300597, 39331, 199003, 2990333, 11637549, 11637549, 2990333, 199003, 1007683, 29784763, 229271097, 454996327, 229271097, 29784763, 1007683, 5105107 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.....61......307.......1543.........7783...........39331............199003
....307.....3059......30263.......300597.........2990333..........29784763
...1543....30263.....591711.....11637549.......229271097........4522455227
...7783...300597...11637549....454996327.....17838321119......700485517781
..39331..2990333..229271097..17838321119...1394283842243...109246451313313
.199003.29784763.4522455227.700485517781.109246451313313.17100147398257787
LINKS
FORMULA
Empirical for column k:
k=1: a(n) = 7*a(n-1) -6*a(n-2) -18*a(n-3) -6*a(n-4)
k=2: [order 9]
k=3: [order 16]
k=4: [order 44]
k=5: [order 95]
EXAMPLE
Some solutions for n=2 k=4
..0..1..1..2..2....1..1..2..1..1....1..2..2..3..2....1..2..2..3..4
..1..0..1..1..1....1..2..2..1..2....1..2..3..3..3....1..2..2..3..3
..0..0..1..1..0....2..2..1..2..2....2..2..2..2..3....2..1..2..3..3
CROSSREFS
Sequence in context: A142605 A142133 A302730 * A142217 A234029 A142923
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 18 2013
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 24 14:46 EDT 2024. Contains 374584 sequences. (Running on oeis4.)