Primes of the form 2*3^a+5^b where 3^a+2*5^b is also prime, and a,b >= 1.
A344175
Primes of the form 2*3^a+5^b where 3^a+2*5^b is also prime, and a,b >= 1.
Terms
- a(0) =11a(1) =23a(2) =31a(3) =43a(4) =59a(5) =179a(6) =643a(7) =2083a(8) =13127a(9) =15643a(10) =15679a(11) =42491a(12) =1078507a(13) =3579271a(14) =19331563a(15) =86094067a(16) =6103515643a(17) =8194271927a(18) =783860159531
External references
- oeis: A344175