a(1) = 1; a(n+1) = Sum_{k=1..n} lcm(a(k),a(n))/a(n).

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =8a(6) =12a(7) =12a(8) =13a(9) =45a(10) =36a(11) =32a(12) =86a(13) =120a(14) =75a(15) =177a(16) =250a(17) =315a(18) =281a(19) =1194a(20) =726a(21) =925a(22) =2695a(23) =2218a(24) =5776a(25) =6808a(26) =6632a(27) =8383a(28) =28449a(29) =34934