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 = 5.
A296812
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 = 5.
Terms
- a(0) =4786a(1) =5991a(2) =6218a(3) =8351a(4) =9995a(5) =13391a(6) =14367a(7) =15434a(8) =16658a(9) =16706a(10) =18663a(11) =19466a(12) =27578a(13) =28738a(14) =33551a(15) =34082a(16) =34187a(17) =37727a(18) =38823a(19) =41555a(20) =45251a(21) =46391a(22) =46743a(23) =47738a(24) =49983a(25) =52847a(26) =57458a(27) =58407a(28) =62387a(29) =67191
External references
- oeis: A296812