27791

Properties

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 96 ones.at n=28A031864
• Number of rooted trees with n nodes and 4 leaves.at n=15A055279
• Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d=2,4 or 6) and forming d-pattern=[2,6,4]; short d-string notation of pattern = [264].at n=28A078848
• Primes p such that the differences between the 5 consecutive primes starting with p are (2,6,4,6).at n=6A078949
• Primes of the form p = prime(k) = (prime(k+3)+prime(k-1))/2.at n=28A126238
• Primes p such that (12*p - 1, 12*p + 1) and (18*p - 1, 18*p + 1) are twin primes.at n=6A138660
• Primes such that applying "reverse and add" twice produces two more primes.at n=15A174402
• Number of 4-step S, E, and NW-moving king's tours on an n X n board summed over all starting positions.at n=37A187509
• Primes of the form 3*k^3 + 8.at n=7A201117
• Primes of the form 7n^2 + 8.at n=3A201608
• Primes p such that p+2, p+8, and p+12 are all prime.at n=36A233540
• Integers n such that n+2!, n+2!+3!, n+2!+3!+4!, n+2!+3!+4!+5!, n+2!+3!+4!+5!+6!, and n+2!+3!+4!+5!+6!+7! are all prime.at n=20A267123
• Twin primes both of which are the sum of three positive cubes.at n=20A272376
• Primes p such that p+2^3, p+2^5 and p+2^7 are all primes.at n=39A275475
• Primes p such that A276173(p) = p.at n=40A276174
• Number of partitions of n containing no part i of multiplicity i-1.at n=41A277102
• Primes p such that the polynomial x^7 - 7*x + 3 (mod p) is the product of seven linear factors.at n=15A358147
• Lesser of twin primes p such that p and p+2 are both in A115591.at n=27A367318
• Prime numbersat n=3033