55641

Appears in sequences

• a(n) = n*(1 + n)*(3 - 4*n + 4*n^2)/6.at n=16A213840
• O.g.f. satisfies: A(x) = Sum_{n>=0} n^(2*n) * x^n * A(x)^n / n! * exp(-n^2*x*A(x)).at n=5A219184
• Number of length-5 0..n arrays with no repeated value differing from the previous repeated value by other than plus two or minus 1.at n=7A269642
• a(n) is the least integer k such that k/Fibonacci(n) > Pi.at n=22A293678
• a(n) is the integer k that minimizes |k/Fibonacci(n) - Pi|.at n=22A293679
• G.f. A(x) satisfies: A(x) = (1 + x) * A(x^2)^2*A(x^3)^3*A(x^4)^4* ... *A(x^k)^k* ...at n=18A307605
• Number of series-reduced locally non-intersecting aperiodic rooted trees with n nodes.at n=21A319271