Numbers with more than one factorization into S-primes. See A054520 and A057948 for definition.

Terms

a(0) =441a(1) =693a(2) =1089a(3) =1197a(4) =1449a(5) =1617a(6) =1881a(7) =1953a(8) =2205a(9) =2277a(10) =2541a(11) =2709a(12) =2793a(13) =2961a(14) =3069a(15) =3249a(16) =3381a(17) =3465a(18) =3717a(19) =3933a(20) =3969a(21) =4221a(22) =4257a(23) =4389a(24) =4473a(25) =4557a(26) =4653a(27) =4761a(28) =4977a(29) =5229