280409

Properties

Appears in sequences

• Let P1>3, P2, P3, P4 be 4 consecutive primes with P3-P2 = 2. a(n) = P2 is the earliest occurrence of the 4-tuple with min(P2-P1, P4-P3) = 2*n, or 0 if no such constellation exists.at n=16A347280
• G.f. A(x) satisfies A(x) = (1 + x*A(x))^2/(1 - x*A(x)^3).at n=6A379194
• Prime numbersat n=24465