A250159 Number of length 5+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

1212, 50228, 721644, 5682771, 30540568, 126272510, 431428872, 1275205749, 3363667972, 8094090840, 18057831188, 37810573671, 75010469184, 142049830978, 258334922192, 453401198121, 771088399500, 1275041371324, 2055848647164

Offset

1,1

Comments

Row 5 of A250154

Links

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

Formula

Empirical: a(n) = (1/15)*n^10 + (13/4)*n^9 + (2455/84)*n^8 + (722/7)*n^7 + 194*n^6 + (15671/60)*n^5 + (3617/12)*n^4 + 236*n^3 + (16861/210)*n^2 + (509/210)*n + 1

Example

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

Crossrefs

Sequence in context: A204332 A203661 A203657 * A184464 A204331 A105311

Adjacent sequences: A250156 A250157 A250158 * A250160 A250161 A250162

Keyword

nonn

Author

R. H. Hardin, Nov 13 2014

Status

approved