Least prime >= n (version 1 of the "next prime" function).

Terms

a(0) =2a(1) =2a(2) =2a(3) =3a(4) =5a(5) =5a(6) =7a(7) =7a(8) =11a(9) =11a(10) =11a(11) =11a(12) =13a(13) =13a(14) =17a(15) =17a(16) =17a(17) =17a(18) =19a(19) =19a(20) =23a(21) =23a(22) =23a(23) =23a(24) =29a(25) =29a(26) =29a(27) =29a(28) =29a(29) =29