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!)
A250160 Number of length 6+6 0..n arrays with every seven consecutive terms having the maximum of some two terms equal to the minimum of the remaining five terms 1
2248, 122228, 2144132, 19726379, 120228940, 552269862, 2065373112, 6607592421, 18700338208, 47943752104, 113308224476, 250125796271, 521017392260, 1032386666362, 1958587672368, 3576440979465, 6313441009080, 10813776458524 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A250154

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..103

FORMULA

Empirical: a(n) = (1/99)*n^11 + (49/36)*n^10 + (5111/252)*n^9 + (4255/42)*n^8 + (5189/21)*n^7 + (4589/12)*n^6 + (90821/180)*n^5 + (5075/9)*n^4 + (23329/63)*n^3 + (3109/42)*n^2 - (42157/2310)*n + 1

EXAMPLE

Some solutions for n=2

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

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

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

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

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A230679 A236114 A184767 * A287701 A123297 A251944

Adjacent sequences:  A250157 A250158 A250159 * A250161 A250162 A250163

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 13 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 25 23:22 EDT 2021. Contains 348256 sequences. (Running on oeis4.)