A250088 Number of length 7+5 0..n arrays with every six consecutive terms having the maximum of some two terms equal to the minimum of the remaining four terms

1348, 55647, 813208, 6341373, 33356124, 134387611, 446774000, 1284748281, 3298249396, 7729452247, 16806370824, 34322244853, 66459773004, 122930604819, 218512849120, 375082698737, 624250609956, 1010727810127, 1596565238392

Offset

1,1

Comments

Row 7 of A250081

Links

R. H. Hardin, Table of n, a(n) for n = 1..183

Formula

Empirical: a(n) = (173/63)*n^9 + (103/3)*n^8 + 130*n^7 + 224*n^6 + (1162/5)*n^5 + (764/3)*n^4 + (17908/63)*n^3 + 160*n^2 + (123/5)*n + 1

Example

Some solutions for n=2
..2....2....2....0....0....0....2....1....1....2....1....1....2....1....2....1
..1....2....1....1....2....0....1....0....0....1....0....1....2....1....1....0
..1....1....1....1....1....2....0....0....1....1....2....1....0....0....0....1
..1....1....1....1....1....0....1....0....1....2....0....0....1....0....1....0
..0....2....1....2....2....0....0....2....2....1....1....2....1....0....1....0
..1....1....1....2....2....2....0....1....1....1....0....2....1....1....1....1
..2....0....1....1....1....0....2....0....2....0....0....1....1....0....2....1
..1....2....1....1....1....0....2....0....1....2....0....1....2....0....2....0
..2....1....2....2....2....0....0....0....2....1....2....1....2....2....1....0
..2....1....0....1....1....2....0....2....0....1....0....1....1....0....0....0
..0....2....1....2....2....0....0....1....1....1....2....0....1....1....1....1
..1....2....2....0....0....1....0....0....1....2....0....2....0....1....1....0

Crossrefs

Sequence in context: A224566 A053770 A094037 * A166193 A307586 A224743

Adjacent sequences: A250085 A250086 A250087 * A250089 A250090 A250091

Keyword

nonn

Author

R. H. Hardin, Nov 11 2014

Status

approved