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A202007 Number of -n..n circular arrays x(0..4) of 5 elements with zero sums of x(i) and x(i)*x((i+1) mod 5) 1
11, 31, 61, 101, 111, 231, 261, 361, 431, 491, 541, 801, 851, 931, 1081, 1321, 1391, 1671, 1761, 1981, 2131, 2311, 2381, 2921, 3051, 3291, 3441, 3761, 3871, 4411, 4521, 4941, 5171, 5411, 5681, 6301, 6491, 6831, 7061, 7641, 7791, 8491, 8661, 9081, 9571 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 3 of A202006
LINKS
EXAMPLE
Some solutions for n=3
..0...-2....1...-2...-2....2...-2....2....0....1....3....0...-2....0...-1...-2
.-1....0....0....2...-1....1....3...-3....3....2...-2...-3....0....2....0....2
.-2....0....0....1...-2....2....2...-2....0...-2...-1....0....2....0....1....1
..2....2...-1....2....2...-2...-2....2....0...-3...-2....0....0....0....2....0
..1....0....0...-3....3...-3...-1....1...-3....2....2....3....0...-2...-2...-1
CROSSREFS
Sequence in context: A196117 A040162 A113747 * A125239 A062786 A090562
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 07 2011
STATUS
approved

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Last modified May 22 06:24 EDT 2024. Contains 372743 sequences. (Running on oeis4.)