A250166 Number of length n+1 0..7 arrays with the sum of adjacent differences multiplied by some arrangement of +-1 equal to zero

8, 88, 976, 10460, 103556, 938128, 7989940, 65768448, 532548628, 4281269376, 34316191340, 274736779444, 2198552029712, 17590557578440, 140731669092632, 1125878500233800, 9007118671839640, 72057285402401144, 576459555378977560

Offset

1,1

Comments

Column 7 of A250167

Links

R. H. Hardin, Table of n, a(n) for n = 1..22

Example

Some solutions for n=5
..2....5....5....4....1....1....1....2....0....4....3....5....1....6....4....4
..1....5....0....6....3....6....7....7....5....2....2....7....4....4....3....6
..5....7....3....3....1....5....3....3....3....2....1....2....6....5....5....7
..6....6....6....5....1....2....4....4....5....0....5....6....2....4....6....2
..5....7....7....3....2....3....6....5....4....0....7....7....3....4....5....1
..2....7....7....2....1....1....5....4....0....0....7....5....5....2....6....0

Crossrefs

Sequence in context: A002282 A112907 A053380 * A247738 A115864 A036917

Adjacent sequences: A250163 A250164 A250165 * A250167 A250168 A250169

Keyword

nonn

Author

R. H. Hardin, Nov 13 2014

Status

approved