Take a squarefree semiprime and take the difference of its prime factors. If it is a squarefree semiprime repeat the process. Sequence lists the squarefree semiprimes that generate other squarefree semiprimes only in the first k steps of this process. Case k = 8.
A296815
Take a squarefree semiprime and take the difference of its prime factors. If it is a squarefree semiprime repeat the process. Sequence lists the squarefree semiprimes that generate other squarefree semiprimes only in the first k steps of this process. Case k = 8.
Terms
- a(0) =373763a(1) =2276543a(2) =4710863a(3) =5840138a(4) =6108239a(5) =6443183a(6) =6458303a(7) =6983939a(8) =7136306a(9) =7861439a(10) =7997915a(11) =8212934a(12) =9861599a(13) =11261531a(14) =11834786a(15) =11921123a(16) =12204659a(17) =13520063a(18) =13851443a(19) =15236327a(20) =15827978a(21) =17312258a(22) =17632739a(23) =18661922a(24) =19432739a(25) =19523195a(26) =19793603a(27) =20301986a(28) =20335439a(29) =20441459
External references
- oeis: A296815