login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A250053
Number of length n+6 0..2 arrays with no seven consecutive terms having the maximum of any two terms equal to the minimum of the remaining five terms
1
735, 1299, 2292, 4030, 7054, 12284, 21276, 36654, 65647, 117118, 207970, 367357, 645284, 1127254, 1959943, 3490956, 6215841, 11039715, 19532090, 34400784, 60306267, 105317881, 186769658, 331702865, 588582975, 1041809368, 1837663608
OFFSET
1,1
COMMENTS
Column 2 of A250059
FORMULA
Empirical recurrence of order 98 (see link above)
EXAMPLE
Some solutions for n=6
..1....2....1....0....1....2....2....2....2....1....2....2....2....1....1....2
..1....0....0....1....2....0....2....2....1....0....0....2....1....1....1....1
..1....2....2....1....2....1....0....0....0....1....2....2....2....0....2....1
..2....2....2....1....2....1....0....2....0....0....2....0....0....0....2....1
..0....2....2....2....0....0....2....2....2....2....2....1....2....2....2....1
..2....2....2....0....0....2....2....1....2....2....2....2....2....2....2....0
..0....1....0....1....2....1....2....0....2....1....0....2....2....2....2....0
..1....2....2....0....2....1....1....1....1....2....2....2....0....1....0....2
..1....0....1....2....2....0....2....1....2....0....0....2....1....1....1....1
..1....2....2....1....1....1....0....0....2....2....2....2....2....0....0....1
..2....0....2....1....1....2....2....2....1....2....2....0....2....0....1....1
..0....2....2....1....0....0....0....1....2....0....1....0....2....2....1....1
CROSSREFS
Sequence in context: A349870 A174456 A306474 * A227755 A096595 A324257
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 11 2014
STATUS
approved