Sum of previous term and preceding relatively prime terms.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =7a(5) =19a(6) =38a(7) =49a(8) =118a(9) =197a(10) =440a(11) =716a(12) =992a(13) =1268a(14) =1544a(15) =1820a(16) =2040a(17) =2313a(18) =9524a(19) =12113a(20) =33210a(21) =45596a(22) =60298a(23) =74944a(24) =89646a(25) =102032a(26) =116678a(27) =129067a(28) =684624a(29) =826077