Define a(1)=41; then a(n)=k*a(n-1)^2-1 with k least number such that a(n) and a(n)+2 are twin primes.

A112550

Define a(1)=41; then a(n)=k*a(n-1)^2-1 with k least number such that a(n) and a(n)+2 are twin primes.