Number of semiprime Fermat pseudoprimes to base 2 (A214305) less than 10^n.
A300418
Number of semiprime Fermat pseudoprimes to base 2 (A214305) less than 10^n.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =11a(4) =34a(5) =107a(6) =312a(7) =882a(8) =2457a(9) =6504a(10) =17206a(11) =46073a(12) =123868a(13) =334567a(14) =915443a(15) =2520503a(16) =7002043a(17) =19604493a(18) =55264235
External references
- oeis: A300418