A250074 Number of length n+5 0..1 arrays with every six consecutive terms having the maximum of some two terms equal to the minimum of the remaining four terms

49, 83, 144, 252, 442, 774, 1348, 2361, 4156, 7334, 12956, 22892, 40444, 71468, 126350, 223466, 395309, 699356, 1237295, 2189067, 3873133, 6853086, 12126176, 21457004, 37968019, 67184477, 118883613, 210366841, 372249789, 658707896

Offset

1,1

Comments

Column 1 of A250081

Links

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

Formula

Empirical: a(n) = 2*a(n-1) -a(n-3) +a(n-5) +3*a(n-6) -4*a(n-7) -4*a(n-8) +2*a(n-9) +a(n-10) -a(n-11) -6*a(n-12) +2*a(n-13) +7*a(n-14) -2*a(n-15) +4*a(n-18) -4*a(n-20) +a(n-21) -a(n-24) +a(n-26)

Example

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

Crossrefs

Sequence in context: A006832 A343000 A343022 * A247678 A093894 A259766

Adjacent sequences: A250071 A250072 A250073 * A250075 A250076 A250077

Keyword

nonn

Author

R. H. Hardin, Nov 11 2014

Status

approved