A250342 Number of length 6+5 0..n arrays with every six consecutive terms having the maximum of some three terms equal to the minimum of the remaining three terms

424, 21523, 266448, 1789193, 8357144, 30606683, 94080768, 253309665, 614750056, 1372133587, 2858593552, 5620837833, 10521617432, 18877802939, 32642526080, 54641070081, 88871500968, 140882422099, 218241706192, 331111612873

Offset

1,1

Comments

Row 6 of A250336

Links

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

Formula

Empirical: a(n) = (71/315)*n^9 + (851/140)*n^8 + (573/14)*n^7 + 112*n^6 + 162*n^5 + (2717/20)*n^4 + (5041/126)*n^3 - (601/14)*n^2 - (3272/105)*n + 1

Example

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

Crossrefs

Sequence in context: A091292 A184766 A250377 * A232359 A294714 A294712

Adjacent sequences: A250339 A250340 A250341 * A250343 A250344 A250345

Keyword

nonn

Author

R. H. Hardin, Nov 19 2014

Status

approved