162115

Appears in sequences

• 1/4 the number of arrangements of 4 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=36A189953
• a(n) = sum(floor(sqrt(Bell(k))),k=0..n).at n=16A192571