a(n) is the smallest k such that the sum of the first k primes has exactly n prime factors, counting multiplicity.

A385997

a(n) is the smallest k such that the sum of the first k primes has exactly n prime factors, counting multiplicity.

Terms

    a(0) =1a(1) =3a(2) =5a(3) =9a(4) =17a(5) =11a(6) =103a(7) =119a(8) =475a(9) =237a(10) =2661a(11) =1481a(12) =3045a(13) =1567a(14) =22019a(15) =34907a(16) =24995a(17) =28173a(18) =4915a(19) =269225a(20) =214183a(21) =927571a(22) =1085315a(23) =9724983a(24) =2567053a(25) =4620383a(26) =8827803a(27) =38175467a(28) =37167809a(29) =98773463

External references