a(1) = 0; a(n) = smallest composite number which is a sum of n distinct primes.

Terms

a(0) =0a(1) =8a(2) =10a(3) =21a(4) =28a(5) =45a(6) =58a(7) =77a(8) =100a(9) =129a(10) =160a(11) =201a(12) =238a(13) =285a(14) =328a(15) =381a(16) =440a(17) =501a(18) =568a(19) =639a(20) =712a(21) =791a(22) =874a(23) =963a(24) =1060a(25) =1161a(26) =1264a(27) =1371a(28) =1480a(29) =1593