a(1)=1, a(2)=2 and a(n+1) is minimal such that there are a(n-1) primes strictly between a(n) and a(n+1).
A082279
a(1)=1, a(2)=2 and a(n+1) is minimal such that there are a(n-1) primes strictly between a(n) and a(n+1).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =8a(4) =20a(5) =54a(6) =152a(7) =464a(8) =1532a(9) =5334a(10) =19764a(11) =77042a(12) =316760a(13) =1361630a(14) =6129422a(15) =28709012a(16) =139999730a(17) =707500404a(18) =3705539918a(19) =20045427240a(20) =111972406422a(21) =644198989898
External references
- oeis: A082279