a(n) = prime(n)*prime(n+2).

Terms

a(0) =10a(1) =21a(2) =55a(3) =91a(4) =187a(5) =247a(6) =391a(7) =551a(8) =713a(9) =1073a(10) =1271a(11) =1591a(12) =1927a(13) =2279a(14) =2773a(15) =3233a(16) =3953a(17) =4331a(18) =4891a(19) =5609a(20) =6059a(21) =7031a(22) =8051a(23) =8989a(24) =9991a(25) =10807a(26) =11227a(27) =12091a(28) =13843a(29) =14803