A249473 Number of length 7+4 0..n arrays with no five consecutive terms having four times any element equal to the sum of the remaining four

1546, 41084, 1422232, 16249428, 144140836, 843025344, 3940066010, 15322870410, 51559998434, 153928094968, 417597134828, 1043160494934, 2431475134350, 5337351650512, 11135359755600, 22188626020430, 42474008430092

Offset

1,1

Comments

Row 7 of A249466

Links

R. H. Hardin, Table of n, a(n) for n = 1..65

Example

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

Crossrefs

Sequence in context: A038009 A362507 A249008 * A246899 A090209 A283154

Adjacent sequences: A249470 A249471 A249472 * A249474 A249475 A249476

Keyword

nonn

Author

R. H. Hardin, Oct 29 2014

Status

approved