Difference between partial sum of the first n primes and the first n even numbers greater than 0.

Terms

a(0) =0a(1) =-1a(2) =-2a(3) =-3a(4) =-2a(5) =-1a(6) =2a(7) =5a(8) =10a(9) =19a(10) =28a(11) =41a(12) =56a(13) =71a(14) =88a(15) =109a(16) =134a(17) =159a(18) =188a(19) =219a(20) =250a(21) =285a(22) =322a(23) =363a(24) =410a(25) =459a(26) =508a(27) =559a(28) =610a(29) =663