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A202075
Number of arrays of n+2 integers in -7..7 with sum zero and the sum of every adjacent pair being odd
1
44, 560, 1786, 0, 95342, 1264272, 4213042, 0, 241384794, 3259289000, 11028760078, 0, 651843679214, 8881641917904, 30295985735960, 0, 1822122857478000, 24962501190898560, 85571276146432860, 0, 5204404120691796724
OFFSET
1,1
COMMENTS
Column 7 of A202076
LINKS
EXAMPLE
Some solutions for n=3
.-4....4....4....2...-6....2....4...-6...-4...-2....2....0....0...-2...-2....2
.-5...-5....7...-5....5...-1...-5....7...-3....7...-3...-3....5....3....3...-7
.-2....2...-4....2....0....0...-2...-2....6...-2....6...-2...-2....4...-2....6
..5...-3...-7...-5...-5...-3....7....1....1...-1...-1....5...-3...-7....1...-7
..6....2....0....6....6....2...-4....0....0...-2...-4....0....0....2....0....6
CROSSREFS
Sequence in context: A283541 A354608 A339852 * A297680 A264680 A356415
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 10 2011
STATUS
approved