34781

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 91.at n=25A020430
• Primes p such that q-p = 26, where q is the next prime after p.at n=18A124594
• Primes in A153257.at n=10A140719
• a(n) = n^3 - (n+1)^2.at n=33A153257
• Number of binary strings of length n with equal numbers of 01001 and 10101 substrings.at n=16A164260
• Primes congruent to 5 (mod 504).at n=26A228093
• Primes p such that b=2*p+1 is semiprime, c=2*b+1 is 3-almost prime and d=2*c+1 is 4-almost prime.at n=32A235646
• Primes of the form sigma(n) + sigma(n)^2 - 1.at n=41A259190
• a(n) = A266196(A000079(n)); indices of powers of 2 in A266195.at n=37A266186
• Expansion of (1/(1 - x))*Product_{k>=1} (1 - x^prime(k))/(1 - x^k).at n=51A303663
• Trajectory of n under the Reverse and Add! operation carried out in base 8 (presumably) does not reach a palindrome and (presumably) does not join the trajectory of any term m < n.at n=43A306596
• Unbranched catafusenes, unsymmetrical.at n=12A323932
• Number of partitions of n into 9 or more distinct parts.at n=45A347576
• Primes p such that neither g-1 nor g+1 is prime, where g is the gap from p to the next prime.at n=31A355485
• Primes that can be represented as k*R(k) + 1, where R(k) is the reverse of k.at n=42A372197
• Prime numbersat n=3715