A250279 Number of length 4+1 0..n arrays with the sum of the squares of adjacent differences multiplied by some arrangement of +-1 equal to zero

16, 79, 240, 581, 1132, 1991, 3156, 4841, 7024, 9807, 13180, 17561, 22788, 28943, 36012, 44421, 53964, 65179, 77596, 91809, 107508, 124907, 143800, 165353, 188792, 214495, 242152, 272493, 305164, 341051, 379132, 420569, 464568, 511663, 561324

Offset

1,1

Comments

Row 4 of A250277

Links

R. H. Hardin, Table of n, a(n) for n = 1..68

Example

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

Crossrefs

Sequence in context: A210324 A250231 A212896 * A269584 A373927 A044203

Adjacent sequences: A250276 A250277 A250278 * A250280 A250281 A250282

Keyword

nonn

Author

R. H. Hardin, Nov 16 2014

Status

approved