a(1) = 1; a(n) is the smallest integer such that a(n) + a(n-1) has the first n distinct prime factors not used before in this construction.

A100474

a(1) = 1; a(n) is the smallest integer such that a(n) + a(n-1) has the first n distinct prime factors not used before in this construction.

Terms

    a(0) =1a(1) =5a(2) =380a(3) =96197a(4) =58546472a(5) =42588477041

External references