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!)
A232071 Number of (n+1)X(3+1) 0..1 arrays with every element equal to some horizontal, diagonal or antidiagonal neighbor, with top left element zero 1
46, 520, 6624, 82996, 1043172, 13105012, 164650280, 2068621706, 25989674166, 326528021922, 4102419848778, 51541819920986, 647559075731254, 8135777066019200, 102215953652767856, 1284216749830662044 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A232076
LINKS
FORMULA
Empirical: a(n) = 10*a(n-1) +33*a(n-2) +6*a(n-3) -176*a(n-4) -300*a(n-5) -15*a(n-6) -76*a(n-7) +79*a(n-8) +72*a(n-9) -16*a(n-10)
EXAMPLE
Some solutions for n=4
..0..1..1..1....0..1..1..1....0..0..1..0....0..0..0..0....0..0..1..1
..1..0..1..1....1..0..0..0....1..1..0..1....0..1..0..0....0..1..1..1
..0..0..0..1....0..1..1..1....1..0..1..1....1..1..0..0....1..1..0..0
..0..1..1..0....0..1..0..0....1..1..1..0....1..1..0..0....0..1..1..1
..1..1..0..1....1..0..0..0....1..1..0..0....1..0..0..0....0..0..0..1
CROSSREFS
Sequence in context: A160285 A111304 A055751 * A156892 A224258 A223914
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 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 April 14 10:04 EDT 2024. Contains 371657 sequences. (Running on oeis4.)