A250281 Number of length 6+1 0..n arrays with the sum of the squares of adjacent differences multiplied by some arrangement of +-1 equal to zero

64, 843, 4412, 17885, 51884, 130335, 281552, 564985, 1028832, 1775463, 2887804, 4568929, 6917108, 10184331, 14530168, 20394445, 27913864, 37658171, 49810736, 65176853, 83924392, 106914955, 134435648, 168004421, 207572064

Offset

1,1

Comments

Row 6 of A250277

Links

Table of n, a(n) for n=1..25.

Example

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

Crossrefs

Sequence in context: A164280 A232001 A185299 * A283547 A297686 A292028

Adjacent sequences: A250278 A250279 A250280 * A250282 A250283 A250284

Keyword

nonn

Author

R. H. Hardin, Nov 16 2014

Status

approved