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A202010 Number of -n..n circular arrays x(0..7) of 8 elements with zero sums of x(i) and x(i)*x((i+1) mod 8) 1
329, 4281, 22865, 80065, 221433, 511257, 1039409, 1942577, 3390393, 5593849, 8817137, 13364177, 19646313, 28112089, 39223825, 53614481, 71956841, 95063497, 123687521, 158858737, 201582329, 252854953, 314267937, 386939601, 472760313 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 6 of A202006
LINKS
EXAMPLE
Some solutions for n=1
..1....0....1....0....1....1...-1....1....1....1....0....0....1....0....0....0
..1....1....1....1....0....1....0...-1....0....0....1....0....0....0....0...-1
..0....1....0....0...-1...-1....0...-1....1....0....0....1...-1...-1...-1....0
..0...-1....1....0...-1...-1....0....0...-1....0...-1...-1....0....0....1....1
..0....1...-1....0....1....0....1....1....0...-1....0...-1....0....0....1....0
.-1....0....0...-1....1....1....1....0...-1....0....0....0....0....0....0....1
..0...-1...-1....0...-1...-1...-1....0...-1....0....0....1....0....0....0....0
.-1...-1...-1....0....0....0....0....0....1....0....0....0....0....1...-1...-1
CROSSREFS
Sequence in context: A253054 A273615 A231362 * A265195 A190920 A145274
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 07 2011
STATUS
approved

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Last modified April 20 17:12 EDT 2024. Contains 371845 sequences. (Running on oeis4.)