A250227 Number of length n+1 0..6 arrays with the sum of the cubes of adjacent differences multiplied by some arrangement of +-1 equal to zero

7, 67, 187, 1519, 6367, 59415, 371227, 3347259, 25280899, 217539879, 1797387895, 15157136755, 126097221397, 1042012762911

Offset

1,1

Comments

Column 6 of A250229

Links

Table of n, a(n) for n=1..14.

Example

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

Crossrefs

Sequence in context: A139783 A103102 A139910 * A250275 A240373 A077789

Adjacent sequences: A250224 A250225 A250226 * A250228 A250229 A250230

Keyword

nonn

Author

R. H. Hardin, Nov 14 2014

Status

approved