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 * A393528 A075467 A257647

Adjacent sequences: A249251 A249252 A249253 * A249255 A249256 A249257

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved