77915

Appears in sequences

• T(n,n-2), array T as in A047089.at n=9A047093
• n*10^4-1, n*10^4-3, n*10^4-7 and n*10^4-9 are all prime.at n=21A064978
• 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.at n=35A296812
• Irregular table whose rows are the nontrivial cycles of the ghost iteration A329200, ordered by increasing smallest member, always listed first.at n=17A329196