77909

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 22.at n=22A031610
• Monotonic ordering of nonnegative differences 5^i-6^j, for 40>= i>=0, j>=0.at n=25A192193
• Numbers k such that (11*10^k + 49)/3 is prime.at n=29A272999