A249202 Number of length 5+6 0..n arrays with no seven consecutive terms having four times the sum of any three elements equal to three times the sum of the remaining four.

1952, 80354, 2194096, 23617364, 174811880, 931904308, 4161333538, 15379935948, 49569584570, 142443880844, 374519807730, 907880243074, 2070775726222, 4475283102564, 9211265137618

Offset

1,1

Comments

Row 5 of A249197

Links

Table of n, a(n) for n=1..15.

Example

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

Crossrefs

Sequence in context: A252062 A251843 A384840 * A249324 A249217 A155809

Adjacent sequences: A249199 A249200 A249201 * A249203 A249204 A249205

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved