Lower ends of record gaps between numbers that are either primes or semiprimes.

Terms

a(0) =2a(1) =7a(2) =26a(3) =97a(4) =241a(5) =2521a(6) =16022a(7) =26603a(8) =39343a(9) =104659a(10) =248407a(11) =506509a(12) =584213a(13) =2560177a(14) =4036967a(15) =4417813a(16) =5167587a(17) =9725107a(18) =25045771a(19) =27489679a(20) =70416259a(21) =111555371a(22) =174266683a(23) =359589563a(24) =1075714923a(25) =6820213333a(26) =15378035161a(27) =16598109467a(28) =19423306039a(29) =30133946677