a(n) is the smallest prime p such that tau(p+1) = 2^n.

A343020

a(n) is the smallest prime p such that tau(p+1) = 2^n.

Terms

    a(0) =2a(1) =5a(2) =23a(3) =167a(4) =839a(5) =7559a(6) =128519a(7) =1081079a(8) =20540519a(9) =397837439a(10) =8031343319a(11) =188972783999

External references