A250148 Number of length n+6 0..2 arrays with every seven consecutive terms having the maximum of some two terms equal to the minimum of the remaining five terms.

1452, 3450, 8377, 20513, 50228, 122228, 293972, 694228, 1665492, 4027873, 9777930, 23774750, 57812680, 140456696, 340952036, 828586973, 2017490885, 4918984198, 12004021352, 29309966077, 71593348278, 174943782427, 427696402504

Offset

1,1

Comments

Column 2 of A250154.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=6:
..1....1....1....0....1....2....0....1....2....1....0....0....0....0....2....2
..0....2....2....1....1....0....1....0....0....1....1....0....1....2....0....0
..2....1....2....2....0....2....1....1....0....2....1....1....0....1....0....0
..0....2....0....1....2....0....2....0....1....0....0....2....1....2....1....1
..2....2....2....0....1....2....2....0....0....0....2....2....0....1....1....0
..0....1....0....0....1....0....0....0....0....0....0....0....1....2....2....1
..1....2....0....0....1....0....0....1....0....0....1....1....0....1....0....1
..0....1....1....2....1....1....0....0....2....0....0....0....1....1....0....0
..1....1....0....0....1....2....0....0....0....0....0....0....1....1....0....0
..1....2....0....2....2....1....2....1....0....0....2....0....0....1....0....1
..0....1....1....2....0....0....1....2....1....0....2....0....1....1....0....1
..2....0....2....1....2....0....1....0....2....1....0....1....0....2....0....0

Crossrefs

Cf. A250154.

Sequence in context: A122421 A187992 A151722 * A068280 A020396 A052237

Adjacent sequences: A250145 A250146 A250147 * A250149 A250150 A250151

Keyword

nonn

Author

R. H. Hardin, Nov 13 2014

Status

approved