33963

Appears in sequences

• For the Collatz (3x+1) iteration starting at k, the sequence lists the smallest k such that Fibonacci(n) belongs to the trajectory of k, or 0 if no such k exists.at n=22A260389
• Indices of Ulam prime triples, where u(k), u(k+1) and u(k+2) are all primes, and u(k) = A002858(k) are the Ulam numbers.at n=15A307330
• Number of compositions (ordered partitions) of n into an even number of squares.at n=34A339418