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A200268 Number of 0..4 arrays x(0..n+1) of n+2 elements with zero n-1st differences 0
1, 5, 7, 9, 13, 13, 21, 31, 19, 37, 75, 139, 97, 181, 101, 225, 277, 505, 465, 971, 225 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A200272

LINKS

Table of n, a(n) for n=1..21.

EXAMPLE

All solutions for n=6

..2....0....1....1....2....2....3....4....3....2....3....2....1

..0....0....0....1....4....1....2....4....3....2....4....3....2

..2....0....1....1....2....2....3....4....3....2....3....2....1

..4....0....2....1....0....3....4....4....3....2....2....1....0

..4....0....2....1....0....3....4....4....3....2....2....1....0

..2....0....1....1....2....2....3....4....3....2....3....2....1

..0....0....0....1....4....1....2....4....3....2....4....3....2

..2....0....1....1....2....2....3....4....3....2....3....2....1

CROSSREFS

Sequence in context: A005427 A116024 A115913 * A251627 A128161 A141106

Adjacent sequences:  A200265 A200266 A200267 * A200269 A200270 A200271

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 15 2011

STATUS

approved

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Last modified May 14 04:27 EDT 2021. Contains 343872 sequences. (Running on oeis4.)