A250322 Number of length 3+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero

8, 41, 104, 233, 436, 745, 1152, 1733, 2460, 3441, 4612, 6073, 7752, 9789, 12108, 14837, 17916, 21489, 25444, 30013, 34996, 40621, 46736, 53569, 60892, 68973, 77660, 87237, 97468, 108653, 120596, 133561, 147300, 162157, 177824, 194673, 212388

Offset

1,1

Comments

Row 3 of A250320

Links

R. H. Hardin, Table of n, a(n) for n = 1..81

Example

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

Crossrefs

Sequence in context: A120646 A041116 A326286 * A135797 A171714 A342034

Adjacent sequences: A250319 A250320 A250321 * A250323 A250324 A250325

Keyword

nonn

Author

R. H. Hardin, Nov 18 2014

Status

approved