a(1) = 668; for n > 1, a(n) = a(n-1) + 1 + sum of distinct prime factors of a(n-1) that are < a(n-1).

A105212

a(1) = 668; for n > 1, a(n) = a(n-1) + 1 + sum of distinct prime factors of a(n-1) that are < a(n-1).

Terms

    a(0) =668a(1) =838a(2) =1260a(3) =1278a(4) =1355a(5) =1632a(6) =1655a(7) =1992a(8) =2081a(9) =2082a(10) =2435a(11) =2928a(12) =2995a(13) =3600a(14) =3611a(15) =3792a(16) =3877a(17) =3878a(18) =4165a(19) =4195a(20) =5040a(21) =5058a(22) =5345a(23) =6420a(24) =6538a(25) =7015a(26) =7105a(27) =7147a(28) =8176a(29) =8259

External references