Sum of next n primes.

Terms

a(0) =2a(1) =8a(2) =31a(3) =88a(4) =199a(5) =384a(6) =659a(7) =1056a(8) =1601a(9) =2310a(10) =3185a(11) =4364a(12) =5693a(13) =7360a(14) =9287a(15) =11494a(16) =14189a(17) =17258a(18) =20517a(19) =24526a(20) =28967a(21) =33736a(22) =38917a(23) =45230a(24) =51797a(25) =59180a(26) =66831a(27) =75582a(28) =84463a(29) =95290