88896

Appears in sequences

• a(n) = [ 1/(2*t(n+1) - t(n) - t(n+2)) ], where t(n) = tan(Pi/2 - 1/n) satisfies n-1 < t(n) < n for all n >= 1.at n=37A024817
• Numbers with multiplicative persistence value 7.at n=10A046516
• Initial values for f(x)=phi(sigma(x)) such that iteration of f ends in cycle of length=11.at n=2A096888
• Composite numbers whose multiplicative persistence is 7.at n=10A199997
• Number of length 2+2 0..n arrays with the sum of the maximum minus twice the median plus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero.at n=30A251429
• Expansion of Product_{n>0} ((1-x^n)/(1+x^n))^n in powers of x.at n=43A285675
• Numbers k such that k and k+2 are both unitary untouchable numbers (A063948).at n=10A357323