A249239 Number of length 6+5 0..n arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four

292, 15552, 482388, 5479172, 40881292, 240606388, 1127486210, 4315376562, 15153436332, 46471655246, 129454999590, 336738094070, 813733089556, 1842347899634, 3989704900336, 8210723053024, 16191974934630, 30859425433708

Offset

1,1

Comments

Row 6 of A249233

Links

R. H. Hardin, Table of n, a(n) for n = 1..28

Example

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

Crossrefs

Sequence in context: A231752 A221480 A231650 * A221359 A248454 A221832

Adjacent sequences: A249236 A249237 A249238 * A249240 A249241 A249242

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved