Terms in A261524 that are not multiples of earlier terms.

Terms

a(0) =3a(1) =7a(2) =31a(3) =73a(4) =85a(5) =127a(6) =2047a(7) =3133a(8) =4369a(9) =8191a(10) =11275a(11) =49981a(12) =60787a(13) =76627a(14) =121369a(15) =131071a(16) =140911a(17) =178481a(18) =262657a(19) =486737a(20) =524287a(21) =599479a(22) =1082401