%I #4 Mar 31 2012 12:35:56
%S 1,33,245,2145,35451,496519
%N Number of strings of n+2 numbers x(i) in -7..7 with the sum of x(i) equal to zero and the sums of x(i)*x(i+1) and x(i)*x(i+2) equal to each other
%C Column 7 of A184061
%e Some solutions for n=4
%e .-7...-2....5....0....7....0....7....1....4....3....4....4....3....3...-4...-1
%e ..5....5....0...-1...-2...-4...-2....0...-1...-2....4....6....0...-4....3...-1
%e .-3...-2...-4....2...-4....0....0....0...-4...-3...-4...-6....4...-1...-4....3
%e .-4...-3...-1....0...-1....0...-5....2...-1....3....0....2...-6....3...-2....2
%e ..3...-3...-4...-1...-4....4...-6....3...-3...-1...-4....0...-3...-1....4...-5
%e ..6....5....4....0....4....0....6...-6....5....0....0...-6....2....0....3....2
%K nonn
%O 1,2
%A _R. H. Hardin_ Jan 09 2011