a(1) = 2. For n > 1, a(n) is the least prime > a(n-1)*n/2.
A190197
a(1) = 2. For n > 1, a(n) is the least prime > a(n-1)*n/2.
Terms
- a(0) =2a(1) =3a(2) =5a(3) =11a(4) =29a(5) =89a(6) =313a(7) =1259a(8) =5669a(9) =28349a(10) =155921a(11) =935531a(12) =6080957a(13) =42566731a(14) =319250501a(15) =2554004029a(16) =21709034261a(17) =195381308371
External references
- oeis: A190197