login
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
OFFSET
1,1
COMMENTS
Row 6 of A250154
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 13 2014
STATUS
approved