Semiprimes k such that k is congruent to 5 modulo k's index in the sequence of semiprimes.
A357023
Semiprimes k such that k is congruent to 5 modulo k's index in the sequence of semiprimes.
Terms
- a(0) =4a(1) =185a(2) =206a(3) =209a(4) =27681a(5) =3066905a(6) =3067135a(7) =3067795a(8) =3067985a(9) =348933197a(10) =348933239a(11) =348933251a(12) =348933257a(13) =348933269a(14) =44690978141a(15) =44690978162a(16) =44690978519a(17) =44690978561a(18) =44690978617a(19) =44690978869a(20) =44690978981a(21) =44690979457a(22) =44690979527
External references
- oeis: A357023