A249981 Number of length n+1 0..2*7 arrays with the sum of the absolute values of adjacent differences equal to n*7

16, 154, 1744, 19574, 237348, 2886016, 35380112, 446342246, 5529256528, 70948896558, 887325882364, 11494042429460, 144804789146232, 1887744535279984, 23911022925991996, 313197804513008262

Offset

1,1

Comments

Column 7 of A249982

Links

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

Example

Some solutions for n=4
..8....6...11....2....6....6....7....4...14...11....2....1....6...12....8...12
..2...10....5...13...13...10....2...13....2....2....0....9....8....8....5....9
..9....6...14...10....3....1...14....4....0....0...13...14....5....2....9...11
..4....0....8...14....2...11...13....8....2...14...14....3...14...10....0....0
.14...14....1....4...12....6....3....2...14...11....2....7....0....0...12...12

Crossrefs

Sequence in context: A080423 A004313 A373293 * A144499 A173763 A155649

Adjacent sequences: A249978 A249979 A249980 * A249982 A249983 A249984

Keyword

nonn

Author

R. H. Hardin, Nov 10 2014

Status

approved