404497

Properties

Appears in sequences

• Primes p such that sigma(p-1)+sigma(p+1) is prime.at n=16A067464
• Primes of the form 9*n^2 + 1.at n=27A156226
• Primes of the form m^2+1 such that m^2-7 = prevprime(m^2) (= A007917(m^2)).at n=10A157935
• Triangle read by rows: T(n,k) = 1 + (A022166(n,k) - binomial(n,k))^2.at n=23A174918
• Triangle read by rows: T(n,k) = 1 + (A022166(n,k) - binomial(n,k))^2.at n=25A174918
• Prime numbersat n=34194