Semiprime centered cube numbers: m^3 + (m+1)^3.

Terms

a(0) =9a(1) =35a(2) =91a(3) =341a(4) =559a(5) =1241a(6) =6119a(7) =7471a(8) =17261a(9) =19909a(10) =75241a(11) =143009a(12) =257651a(13) =323839a(14) =671509a(15) =860851a(16) =967591a(17) =1433969a(18) =1482571a(19) =1970299a(20) =2348641a(21) =2772559a(22) =3413159a(23) =4548059a(24) =5313691a(25) =5666509a(26) =7233841a(27) =7520291a(28) =9568441