239087

Properties

Appears in sequences

• Sum of squares of the first n primes.at n=35A024450
• Consider the line segment in R^n from the origin to the point v=(2,3,5,7,11,...) with prime coordinates; let d = squared distance to this line from the closest point of Z^n (excluding the endpoints). Sequence gives d times v.v.at n=35A059804
• Primes that are the sum of the squares of the first k primes for some k.at n=3A098562
• Numerator of Sum[ Prime[k]^2, {k,1,n}] / Product[ Prime[k], {k,1,n}] = Numerator[ A024450[n] / A002110[n] ].at n=35A122136
• Primes from A122136 corresponding to the indices A122138.at n=18A122139
• Sum of squares of the first n^2 primes = A024450[n^2].at n=5A122209
• Primes in A122209[n].at n=0A122210
• Primes of the form triangular(p) + 1, where p is a prime.at n=26A231988
• Primes p with pi(p), pi(pi(p)) and pi(p^2) all prime, where pi(.) is given by A000720.at n=22A237687
• Primes p such that p+2, p+4, p+6, p+8, p+10 and p+12 are all semiprime.at n=15A241483
• Primes p such that p+2, p+4, p+6, p+8, p+10 are semiprimes.at n=32A241959
• Numbers n such that n+2, n+4, n+6, n+8, n+10, n+12 and n+14 are all semiprimes.at n=18A268578
• Primes p such that p+2, p+4, p+6, p+8, p+10, p+12 and p+14 are all semiprime.at n=3A268862
• Numerator of the contraharmonic mean of the first n primes.at n=35A296199
• Prime numbersat n=21149