A249470 Number of length 4+4 0..n arrays with no five consecutive terms having four times any element equal to the sum of the remaining four

216, 2802, 34832, 206428, 980718, 3512232, 10671554, 28408106, 68141702, 149985134, 308128976, 596635030, 1099154100, 1939520516, 3298783802, 5428583306, 8678985766, 13520275360, 20580791722, 30686017266, 44896600642

Offset

1,1

Comments

Row 4 of A249466

Links

R. H. Hardin, Table of n, a(n) for n = 1..69

Example

Some solutions for n=3
..2....0....1....3....2....0....2....2....1....3....1....0....1....3....3....2
..1....0....3....1....3....2....1....0....0....2....1....3....1....1....1....0
..1....0....3....0....3....3....3....1....1....2....3....1....3....3....2....1
..0....1....3....0....3....1....0....1....1....1....3....0....2....3....1....2
..2....2....2....3....2....2....3....2....0....3....3....3....0....0....2....2
..3....0....3....0....3....0....0....2....0....3....2....1....0....0....0....2
..0....3....1....0....1....3....3....3....0....0....3....1....0....0....1....2
..1....0....0....1....0....1....1....3....1....0....2....2....2....0....0....1

Crossrefs

Sequence in context: A299859 A017139 A249005 * A251359 A251352 A027364

Adjacent sequences: A249467 A249468 A249469 * A249471 A249472 A249473

Keyword

nonn

Author

R. H. Hardin, Oct 29 2014

Status

approved