A253124 Number of length n+2 0..3 arrays with the sum of medians of adjacent triples multiplied by some arrangement of +-1 equal to zero

10, 152, 281, 2058, 6515, 32166, 119317, 517390, 2015982, 8326770, 32994052, 133707596, 532970510, 2143392252, 8562485503, 34327247500, 137243453902, 549498735586, 2197615094086, 8794063054122, 35174129326437, 140721492893118

Offset

1,1

Comments

Column 3 of A253129

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

R. H. Hardin, Empirical recurrence of order 63

Formula

Empirical recurrence of order 63 (see link above)

Example

Some solutions for n=7
..3....1....0....0....3....3....1....1....2....0....3....3....1....3....1....1
..2....0....1....0....0....0....3....2....2....0....1....2....2....1....1....2
..1....2....3....2....3....0....2....2....1....2....2....1....3....2....0....0
..0....1....0....3....3....3....1....3....0....2....2....2....0....1....0....3
..3....0....0....1....3....2....0....2....2....2....1....1....1....0....2....1
..3....1....3....2....1....2....1....0....3....1....1....0....3....3....3....0
..0....2....3....3....2....0....0....1....1....3....2....2....2....3....1....2
..0....0....0....0....3....3....3....0....1....1....3....3....1....3....2....0
..0....2....2....2....2....0....1....1....1....0....1....3....3....2....0....0

Crossrefs

Sequence in context: A034325 A335800 A239620 * A178298 A251730 A222487

Adjacent sequences: A253121 A253122 A253123 * A253125 A253126 A253127

Keyword

nonn

Author

R. H. Hardin, Dec 27 2014

Status

approved