Primes of the form 3n^3+7.

Terms

a(0) =7a(1) =31a(2) =199a(3) =1543a(4) =24007a(5) =41479a(6) =164623a(7) =192007a(8) =421831a(9) =472399a(10) =648007a(11) =714991a(12) =943303a(13) =1215679a(14) =1423663a(15) =1654111a(16) =2491759a(17) =3374599a(18) =4444639a(19) =5184007a(20) =7884223a(21) =8589871a(22) =10125007a(23) =12754591a(24) =14739007a(25) =15265351a(26) =17496007a(27) =18688519a(28) =21904159