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A202009 Number of -n..n circular arrays x(0..6) of 7 elements with zero sums of x(i) and x(i)*x((i+1) mod 7) 1
85, 799, 2605, 7463, 14365, 33699, 53775, 90007, 136473, 213767, 289059, 433343, 552315, 763309, 989675, 1281575, 1548177, 2060815, 2445591, 3041291, 3622123, 4429993, 5095021, 6220341, 7131545, 8453999, 9715693, 11291939, 12624487 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 5 of A202006
LINKS
EXAMPLE
Some solutions for n=2
.-2....2....2...-2....0....0....2....2...-1....0...-1....0...-2...-1...-2...-1
.-2....0...-1....2...-2....0....0....0....1....2....1....0....1....0....2....1
.-1...-2...-2...-1....2....0....0...-1....1....0....1...-2...-2....0....1....1
..2....0...-1....2....1....1...-2...-2....2....1....0....2....1....2....2....0
..2....0....2....2....2....0....0....1...-2...-2....0....2....2....0...-1...-1
.-1....0....0...-1...-1....0...-2....0...-1...-2...-1....0....2....1...-2....0
..2....0....0...-2...-2...-1....2....0....0....1....0...-2...-2...-2....0....0
CROSSREFS
Sequence in context: A183777 A297599 A173470 * A194533 A069308 A183643
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 07 2011
STATUS
approved

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Last modified April 19 15:34 EDT 2024. Contains 371794 sequences. (Running on oeis4.)