30269

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 47.at n=35A020386
• Primes of the form k^2 - 7.at n=17A028883
• Primes P such that P and P+2 are twin primes and P = p(n)# + p(m) with p(n) < p(m) < p(n+1)^2, or 0 if no such prime P for n, p(n)# = n-th primorial, p(m)= m-th prime ( p(m), p(m+1) twin primes ).at n=15A088903
• Primes p such that 2*p+1 and ((2*p+1)^2 + 1)/2 = p^2 + (p+1)^2 are primes.at n=32A098717
• Largest prime factor of 4^(2*n+1)+1.at n=11A229747
• Largest prime factor of 2^(2*n+1)-2^(n+1)+1.at n=10A229767
• Number of (n+1)X(4+1) 0..3 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..3 introduced in row major order.at n=4A231340
• Number of (n+1) X (5+1) 0..3 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..3 introduced in row major order.at n=3A231341
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..3 introduced in row major order.at n=31A231343
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..3 introduced in row major order.at n=32A231343
• Least m > 0 such that gcd(m^n+13, (m+1)^n+13) > 1, or 0 if there is no such m.at n=32A255863
• Largest prime factor of 4^n + 1.at n=23A274903
• Primes p such that the order of 2 mod p is less than the square root of p.at n=28A333245
• Prime numbersat n=3273