A253125 Number of length n+2 0..4 arrays with the sum of medians of adjacent triples multiplied by some arrangement of +-1 equal to zero

13, 345, 673, 7257, 28428, 184145, 866944, 4737473, 23297196, 120376601, 598856998, 3032621917, 15138719850, 76078222215, 380193902100, 1904900579053, 9522965707286, 47655682592913, 238267659404765, 1191769118082757

Offset

1,1

Comments

Column 4 of A253129

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Example

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

Crossrefs

Sequence in context: A296679 A125119 A160396 * A297070 A220636 A078738

Adjacent sequences: A253122 A253123 A253124 * A253126 A253127 A253128

Keyword

nonn

Author

R. H. Hardin, Dec 27 2014

Status

approved