64970

Appears in sequences

• Given the infinite continued fraction i+(i/(i+(i/(i+...)))), where i is the square root of (-1), this is the denominator of the imaginary part of the convergents.at n=17A091809
• Numbers k such that 3^k (mod 2^k) is prime.at n=25A178995
• Numbers k such that the sums (with multiplicity) of prime factors of k and k+1 are both squares.at n=44A359445