A250161 Number of length 7+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

4166, 293972, 6242596, 66600911, 456748018, 2312181994, 9388944776, 32256038301, 97202409022, 263572868960, 655251400172, 1514717574955, 3291656137706, 6782657859958, 13344281223952, 25208831840825

Offset

1,1

Comments

Row 7 of A250154

Links

R. H. Hardin, Table of n, a(n) for n = 1..67

Formula

Empirical: a(n) = (32/99)*n^11 + (1007/90)*n^10 + (5377/63)*n^9 + (1681/6)*n^8 + (1546/3)*n^7 + (10928/15)*n^6 + (45772/45)*n^5 + (9685/9)*n^4 + (67219/126)*n^3 - 14*n^2 - (7551/110)*n + 1

Example

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

Crossrefs

Sequence in context: A104824 A168663 A043627 * A256836 A104918 A308752

Adjacent sequences: A250158 A250159 A250160 * A250162 A250163 A250164

Keyword

nonn

Author

R. H. Hardin, Nov 13 2014

Status

approved