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A202070
Number of arrays of n+2 integers in -2..2 with sum zero and the sum of every adjacent pair being odd
1
4, 20, 26, 0, 96, 524, 726, 0, 2760, 15560, 22084, 0, 85120, 487564, 700966, 0, 2723256, 15746520, 22820940, 0, 89115840, 518517560, 755594620, 0, 2961237136, 17306539536, 25319793096, 0, 99494853120, 583417062540, 856125569286, 0
OFFSET
1,1
COMMENTS
Column 2 of A202076
LINKS
EXAMPLE
Some solutions for n=10
.-1....0....1....2....1...-2....1...-2...-2....2...-1...-2...-2...-1....1....1
..0...-1....0...-1....0....1....0....1...-1...-1....0....1....1...-2....2....2
..1....2...-1...-2...-1....0...-1...-2...-2....0...-1....0....0...-1....1...-1
..0....1....2...-1...-2....1....0...-1....1....1....2....1...-1....0....2...-2
.-1...-2....1....2...-1...-2....1...-2....2...-2...-1....2....0...-1...-1...-1
..0....1....0...-1....0....1...-2....1...-1....1....2...-1....1....2....0....2
..1....2...-1....2...-1....0...-1...-2....0....0....1...-2....2....1...-1....1
.-2...-1....0...-1....2....1....2....1...-1...-1...-2...-1....1...-2....2....0
..1....0...-1....2...-1....0...-1....2....0....2...-1...-2....0....1...-1....1
..0...-1...-2....1....2...-1...-2....1....1...-1....2....1...-1....2...-2....0
.-1...-2....1...-2...-1....0....1....2....2....0....1....2....0...-1...-1...-1
..2....1....0...-1....2....1....2....1....1...-1...-2....1...-1....2...-2...-2
CROSSREFS
Sequence in context: A032425 A194045 A097251 * A198831 A323040 A259755
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 10 2011
STATUS
approved