a(n)-th prime is sum of first k primes for some k.

Terms

a(0) =1a(1) =3a(2) =7a(3) =13a(4) =45a(5) =60a(6) =977a(7) =1108a(8) =2470a(9) =2687a(10) =2784a(11) =3126a(12) =3470a(13) =3977a(14) =4100a(15) =4511a(16) =4644a(17) =5668a(18) =6148a(19) =6627a(20) =6963a(21) =8407a(22) =9767a(23) =10379a(24) =11007a(25) =11220a(26) =11449a(27) =12111a(28) =12332a(29) =23080