26605

Appears in sequences

• Least term in period of continued fraction for sqrt(n) is 9.at n=22A031433
• 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 17.at n=12A031605
• Numbers n such that 2*29^n + 1 is prime.at n=10A141802
• a(n) = Sum_{k=0..3} f(n+k)^2 where f=A130519.at n=25A238604
• a(n) = 13*2^(n+1) - 19.at n=10A275163
• Numbers of the form p*q*r where p, q, r are distinct primes congruent to 1 mod 4 such that Legendre(p/q) = Legendre(p/r) = Legendre(q/r) = -1.at n=24A323271
• Squared length of diagonal of right trapezoid with three consecutive prime length sides.at n=37A360790