A249254 Number of length n+6 0..7 arrays with every seven consecutive terms having five times the sum of some two elements equal to two times the sum of the remaining five

270404, 326788, 393882, 473458, 567504, 678228, 808062, 959666, 1252254, 1625912, 2099284, 2693984, 3434600, 4348698, 5466826, 7625862, 10543658, 14437034, 19562428, 26216136, 34734552, 45494408, 66275940, 95397962, 135542550

Offset

1,1

Comments

Column 7 of A249255

Links

R. H. Hardin, Table of n, a(n) for n = 1..192

Example

Some solutions for n=1
..2....2....2....2....4....4....2....2....2....4....4....0....0....0....2....4
..0....0....2....5....2....5....4....7....1....0....7....7....3....1....2....3
..7....2....5....1....5....1....0....0....5....2....3....3....2....3....6....4
..0....6....7....0....5....4....7....4....5....7....3....7....5....3....6....2
..2....2....3....6....3....7....0....6....0....2....4....5....0....7....4....1
..4....7....6....0....5....0....4....7....5....7....6....7....4....0....5....3
..6....2....3....7....4....7....4....2....3....6....1....6....0....0....3....4

Crossrefs

Sequence in context: A124946 A203940 A139028 * A075467 A257647 A206001

Adjacent sequences: A249251 A249252 A249253 * A249255 A249256 A249257

Keyword

nonn

Author

_R. H. Hardin_, Oct 23 2014

Status

approved