Difference between sum of first n primes and prime(prime(n)).

Terms

a(0) =-1a(1) =0a(2) =-1a(3) =0a(4) =-3a(5) =0a(6) =-1a(7) =10a(8) =17a(9) =20a(10) =33a(11) =40a(12) =59a(13) =90a(14) =117a(15) =140a(16) =163a(17) =218a(18) =237a(19) =286a(20) =345a(21) =390a(22) =443a(23) =502a(24) =551a(25) =614a(26) =701a(27) =784a(28) =881a(29) =976