393006

Appears in sequences

• 1/4 the number of arrangements of n+1 nonzero numbers x(i) in -3..3 with the sum of sign(x(i))*(|x(i)| mod x(i+1)) equal to zero.at n=7A189945
• 1/4 the number of arrangements of 9 nonzero numbers x(i) in -n..n with the sum of sign(x(i))*(|x(i)| mod x(i+1)) equal to zero.at n=2A189958
• G.f. satisfies A(x) = ( 1 + x*A(x)^2 / (1 - x*A(x)) )^2.at n=7A365146