Lower ends of record gaps between numbers that are either prime or twice a prime.

Terms

a(0) =2a(1) =7a(2) =47a(3) =181a(4) =467a(5) =526a(6) =1069a(7) =1262a(8) =1327a(9) =2477a(10) =3274a(11) =5119a(12) =12854a(13) =20809a(14) =28229a(15) =31397a(16) =338038a(17) =520462a(18) =546391a(19) =1050631a(20) =1761206a(21) =1964987a(22) =3466943a(23) =6084986a(24) =27348829a(25) =27915754a(26) =111108769a(27) =113652443a(28) =230126378a(29) =231902267