60761

Properties

Appears in sequences

• Primes p of the form k*(k + 1) - 1 such that p and p + 2 are twin primes.at n=32A088486
• Number of prime pairs below 10^n having a difference of 40.at n=7A093974
• Lesser of Twin prime numbers of the form : i^2+j^3, as sum of square and cube, if Greater Twin prime number also of the form : i^2+j^3, as sum of square and cube.at n=11A143799
• Primes of the form ((p+1)/2)^2+((p-1)/2), where p is prime.at n=40A163419
• Number of (n+2) X (2+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001001.at n=9A260288
• Primes p such that q^2 - p^2 + 1 is the square of a composite number where p and q are consecutive primes.at n=43A316934
• a(n) equals the smallest Sophie Germain prime q such that pi_(p,2p+1)(q,10,(1,3)) - pi_(p,2p+1)(q,10,(3,1)) = n, where pi_(p,2p+1)(q,10,(b,c)) equals the number of Sophie Germain primes A005384(i) such A005384(i) <= q and (A005384(i),A005384(i+1)) == (b,c) (mod 10).at n=13A333084
• Expansion of e.g.f. Sum_{k>=0} x^k / (k! - k*x^k).at n=8A356668
• Prime numbersat n=6125