a(n) is the smallest prime that begins a run of exactly n consecutive numbers having 2, 4, ..., 2*n divisors.

A294528

a(n) is the smallest prime that begins a run of exactly n consecutive numbers having 2, 4, ..., 2*n divisors.

Terms

    a(0) =2a(1) =5a(2) =61a(3) =421a(4) =1524085621

External references