A249201 Number of length 4+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

984, 30876, 620648, 5448778, 33673760, 154701784, 600707602, 1968564672, 5697222870, 14863385160, 35758054122, 79946280740, 169022358266, 340092130758, 654641822312, 1210731789592

Offset

1,1

Comments

Row 4 of A249197

Links

Table of n, a(n) for n=1..16.

Example

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

Crossrefs

Sequence in context: A345539 A345791 A268590 * A249323 A249216 A289063

Adjacent sequences: A249198 A249199 A249200 * A249202 A249203 A249204

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved