Numbers n that generate 5 primes under the first 5 iterations of the map n->A002731(n).
A187431
Numbers n that generate 5 primes under the first 5 iterations of the map n->A002731(n).
Terms
- a(0) =30131199a(1) =50817201a(2) =56496039a(3) =74316929a(4) =171407609a(5) =276672151a(6) =293315671a(7) =337876949a(8) =356498179a(9) =359830101a(10) =372590921a(11) =432448789a(12) =501182201a(13) =541961069a(14) =577016839a(15) =616411051a(16) =749536461a(17) =776113741a(18) =903321909a(19) =919203811a(20) =1005047121a(21) =1285328811a(22) =1323139751a(23) =1340738371
External references
- oeis: A187431