A249231 Number of length n+5 0..6 arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four

81402, 400152, 1974784, 9772492, 48456384, 240606388, 1195936390, 5953728172, 29645835078, 147647019270, 735475715394, 3664294879296, 18259360405130, 91013602227502, 453682441490706, 2261613670033096, 11274675154790034

Offset

1,1

Comments

Column 6 of A249233

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A274033 A029752 A043608 * A237934 A134122 A138044

Adjacent sequences: A249228 A249229 A249230 * A249232 A249233 A249234

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved