42858

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 46.at n=8A031724
• Trajectory of 3 under map n->7n+1 if n odd, n->n/2 if n even.at n=32A037101
• a(n) = 81*n^2 + 9.at n=22A157888
• a(0)=7; a(n) = 7*a(n-1) + 1 if a(n-1) is odd, a(n) = a(n-1)/2 otherwise.at n=37A271623