A250225 Number of length n+1 0..4 arrays with the sum of the cubes of adjacent differences multiplied by some arrangement of +-1 equal to zero

5, 33, 89, 473, 1785, 9437, 47953, 264473, 1440243, 8079297, 45802695, 261075913, 1482800313, 8373051893, 46955800797, 260855334021, 1431746806913, 7751019623085, 41366541154615

Offset

1,1

Comments

Column 4 of A250229

Links

Table of n, a(n) for n=1..19.

Example

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

Crossrefs

Sequence in context: A338342 A135111 A185212 * A250273 A050830 A211059

Adjacent sequences: A250222 A250223 A250224 * A250226 A250227 A250228

Keyword

nonn

Author

R. H. Hardin, Nov 14 2014

Status

approved