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 = 6.
A296813
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 = 6.
Terms
- a(0) =14367a(1) =16706a(2) =18663a(3) =28738a(4) =33551a(5) =49983a(6) =58407a(7) =62387a(8) =68519a(9) =77195a(10) =82743a(11) =97355a(12) =137042a(13) =137915a(14) =143223a(15) =149327a(16) =155114a(17) =181163a(18) =183818a(19) =214247a(20) =238715a(21) =262667a(22) =331211a(23) =332363a(24) =370343a(25) =373763a(26) =384767a(27) =405434a(28) =406743a(29) =448247
External references
- oeis: A296813