a(0)=a(1)=1, a(n) = a(n-1) + a(a(n-2) mod n).

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =8a(6) =16a(7) =17a(8) =18a(9) =36a(10) =54a(11) =57a(12) =73a(13) =81a(14) =84a(15) =100a(16) =105a(17) =205a(18) =305a(19) =405a(20) =413a(21) =429a(22) =634a(23) =734a(24) =788a(25) =824a(26) =842a(27) =926a(28) =928a(29) =1854