28751

Properties

Appears in sequences

• a(0) = 1, a(n) = 21*n^2 + 2 for n>0.at n=37A010011
• Primes with 14 as smallest positive primitive root.at n=20A061327
• Primes p such that p-1 and p+1 are both divisible by fourth powers.at n=18A086709
• Smallest member of a pair of consecutive twin prime pairs that have exactly n primes between them.at n=23A089637
• a(n) = 46*n^2 + 1.at n=25A158632
• Primes p of the form 4*k+3 such that p+2 is prime and p-1 is nonsquarefree.at n=26A175606
• Primes of the form 250n + 1.at n=33A179231
• Duplicate of A089637.at n=23A181981
• Primes of the form 2*n^2 + 50*n + 23.at n=23A217496
• Primes p such that p+2 and q are primes, where q is concatenation of binary representations of p and p+2: q = p * 2^L + p+2, where L is the length of binary representation of p+2: L=A070939(p+2).at n=41A232238
• Prime(n), where n is such that (sum_{i=1..n} prime(i)^16) / n is an integer.at n=1A233460
• Primes p such that p+2 is prime with prime(p+2)-prime(p)=6.at n=15A261533
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 289", based on the 5-celled von Neumann neighborhood.at n=36A271127
• Lesser of twin primes p, p+2 such that prime(p) and prime(p+2) are also twin primes.at n=20A332968
• Prime numbersat n=3131