A249468 Number of length 2+4 0..n arrays with no five consecutive terms having four times any element equal to the sum of the remaining four

58, 464, 2948, 11260, 35322, 91160, 207760, 429364, 821614, 1475648, 2518348, 4114408, 6479030, 9883248, 14668588, 21247164, 30124654, 41900528, 57290148, 77134712, 102409834, 134241312, 173931480, 222958784, 283011294, 355982968

Offset

1,1

Comments

Row 2 of A249466

Links

R. H. Hardin, Table of n, a(n) for n = 1..108

Example

Some solutions for n=6
..5....1....4....5....4....3....6....6....5....1....5....1....0....2....2....3
..3....4....1....5....0....3....1....4....4....2....1....2....3....0....6....2
..1....1....1....1....2....3....3....4....3....2....6....3....3....3....3....2
..5....0....1....1....4....1....3....5....5....6....6....0....3....2....4....2
..6....6....6....4....2....1....5....5....4....2....5....0....3....0....6....5
..3....3....5....4....3....6....2....4....0....4....1....3....0....3....3....3

Crossrefs

Sequence in context: A255684 A156639 A249003 * A232378 A246894 A204470

Adjacent sequences: A249465 A249466 A249467 * A249469 A249470 A249471

Keyword

nonn

Author

R. H. Hardin, Oct 29 2014

Status

approved