A248994 Number of length 7+4 0..n arrays with every five consecutive terms having two times the sum of some three elements equal to three times the sum of the remaining two

2, 53, 204, 585, 4742, 30017, 86800, 206989, 376806, 854053, 1617708, 2998849, 4902560, 7778539, 12440676, 19535371, 28611276, 40771083, 55318846, 77181365, 103633374, 137581435, 176929022, 225283535, 285422254, 360064143, 444125526

Offset

1,1

Comments

Row 7 of A248987

Links

R. H. Hardin, Table of n, a(n) for n = 1..73

Example

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

Crossrefs

Sequence in context: A248991 A248992 A248993 * A212242 A123005 A281227

Adjacent sequences: A248991 A248992 A248993 * A248995 A248996 A248997

Keyword

nonn

Author

R. H. Hardin, Oct 18 2014

Status

approved