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!)
A241610 Number of length n+2 0..4 arrays with no consecutive three elements summing to more than 4 1
35, 105, 315, 889, 2567, 7483, 21631, 62547, 181255, 524877, 1519408, 4399720, 12740155, 36888358, 106810847, 309276700, 895517750, 2592992001, 7508089778, 21739889599, 62948442860, 182269006155, 527765093824, 1528158677522 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A241619
LINKS
FORMULA
Empirical: a(n) = 2*a(n-1) +a(n-2) +7*a(n-3) -4*a(n-4) -5*a(n-5) -12*a(n-6) +4*a(n-7) +3*a(n-8) +9*a(n-9) -3*a(n-10) -a(n-11) -3*a(n-12) +a(n-13) +a(n-15)
EXAMPLE
Some solutions for n=5
..1....0....2....0....3....2....2....0....2....4....0....1....0....0....0....3
..0....0....0....0....0....2....0....0....0....0....0....2....0....1....2....0
..0....0....1....1....1....0....1....1....0....0....3....0....3....0....0....0
..2....1....2....2....2....0....0....1....0....1....1....1....0....0....1....2
..0....0....0....1....0....0....3....0....0....1....0....1....1....0....3....0
..2....0....0....0....0....0....0....2....0....1....0....2....1....0....0....0
..2....3....4....3....3....3....0....1....3....1....0....0....2....3....1....1
CROSSREFS
Sequence in context: A347384 A010085 A033852 * A183854 A156332 A110832
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 26 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 23 06:59 EDT 2024. Contains 374544 sequences. (Running on oeis4.)