Sum of next n even interprimes.

Terms

a(0) =4a(1) =18a(2) =74a(3) =182a(4) =358a(5) =746a(6) =1176a(7) =1854a(8) =2650a(9) =3870a(10) =5696a(11) =7358a(12) =9818a(13) =13052a(14) =16134a(15) =19742a(16) =24192a(17) =30048a(18) =36306a(19) =42932a(20) =50954a(21) =59904a(22) =70210a(23) =82646a(24) =93446a(25) =105640a(26) =117558a(27) =131950a(28) =148108a(29) =165772