253013

Properties

Appears in sequences

• Primes of the form p^2 + 4, where p is prime.at n=25A045637
• Primes p such that p+1, p+2, p+3 and p+4 have equal number of divisors.at n=30A119728
• Primes p such that p+1, p+2, p+3, p+4 and p+5 have equal number of divisors.at n=6A119730
• Prime p1 of the form a^b + c^d = p1, where a, b, c, d are primes and a + b + c + d = p2, where p2 (A164076) is also prime.at n=28A164075
• Values of q in A176983.at n=31A177831
• T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 nXk array.at n=30A220916
• Equals one maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 3Xn array.at n=5A220918
• a(n+1) is the smallest prime > a(n) such that the digits of a(n) are all (with multiplicity) contained in the digits of a(n+1), with a(1)=5.at n=29A242906
• Prime numbersat n=22283