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URL: https://oeis.org/A200149
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A200149
Number of 0..3 arrays x(0..n-1) of n elements with zero n-1st difference.
0
1, 4, 8, 22, 40, 112, 182, 688, 844, 2090, 2478, 21056, 20762, 112864, 113870, 204796, 141246, 2255872, 1610768, 18946704, 15066098, 20640826, 12378248, 332333696, 279217826, 531539936, 618937930, 1715570198, 330283576, 20131457680
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OFFSET
1,2
COMMENTS
Column 3 of
A200154
LINKS
Table of n, a(n) for n=1..30.
EXAMPLE
Some solutions for n=6
..0....1....3....0....3....3....0....2....0....1....0....1....3....3....2....2
..3....3....1....2....3....3....2....3....3....2....3....3....3....2....3....0
..3....2....1....3....1....3....0....1....1....3....0....3....1....1....0....2
..2....2....2....2....1....2....0....1....0....3....0....3....0....0....0....3
..1....3....3....0....3....1....2....3....1....2....3....3....1....0....3....2
..0....1....3....0....3....3....0....2....0....1....0....1....3....3....2....2
CROSSREFS
Sequence in context:
A050482
A323584
A332199
*
A153765
A003606
A048657
Adjacent sequences:
A200146
A200147
A200148
*
A200150
A200151
A200152
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Nov 13 2011
STATUS
approved
