A250564 Number of length 5+2 0..n arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero

62, 989, 7126, 31525, 106362, 290909, 695890, 1486139, 2927312, 5373103, 9352712, 15511735, 24776808, 38224089, 57324690, 83749019, 119721620, 167645127, 230722744, 312355167, 416892578, 548957107, 714415336, 919264381

Offset

1,1

Comments

Row 5 of A250561

Links

Table of n, a(n) for n=1..24.

Example

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

Crossrefs

Sequence in context: A234482 A157499 A249235 * A231027 A103428 A248450

Adjacent sequences: A250561 A250562 A250563 * A250565 A250566 A250567

Keyword

nonn

Author

R. H. Hardin, Nov 25 2014

Status

approved