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URL: https://oeis.org/A200148
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A200148
Number of 0..2 arrays x(0..n-1) of n elements with zero n-1st difference.
0
1, 3, 5, 9, 15, 39, 45, 129, 149, 243, 369, 1365, 2061, 5901, 5951, 7785, 10519, 42519, 59473, 213561, 157559, 278835, 503513, 1553481, 1051639, 2491707, 2981747, 6622209, 10056593, 34139241
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OFFSET
1,2
COMMENTS
Column 2 of
A200154
LINKS
Table of n, a(n) for n=1..30.
EXAMPLE
Some solutions for n=6
..0....0....1....1....2....2....2....1....2....2....2....0....2....0....1....1
..2....1....0....2....2....0....2....2....1....0....0....0....0....0....0....0
..1....2....0....0....1....1....2....1....0....0....0....0....2....0....0....1
..1....2....0....0....0....1....2....0....0....0....1....0....2....1....1....1
..2....1....0....2....0....0....2....0....1....0....2....0....0....2....2....0
..0....0....1....1....2....2....2....1....2....2....2....0....2....0....1....1
CROSSREFS
Sequence in context:
A027154
A217350
A210844
*
A052007
A117480
A018260
Adjacent sequences:
A200145
A200146
A200147
*
A200149
A200150
A200151
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Nov 13 2011
STATUS
approved
