A249217 Number of length 5+6 0..n arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five

1952, 80354, 2363528, 24619804, 181549572, 985612414, 4386401650, 16181960396, 52677240496, 151529682640, 402510784944, 980816185390, 2256668468018, 4888182757724, 10136422535096

Offset

1,1

Comments

Row 5 of A249212

Links

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

Example

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

Crossrefs

Sequence in context: A251843 A249202 A249324 * A155809 A116211 A234560

Adjacent sequences: A249214 A249215 A249216 * A249218 A249219 A249220

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved