Primes consisting only of digits 5 and 9 occurring with equal frequency.

A087535

Primes consisting only of digits 5 and 9 occurring with equal frequency.

Terms

    a(0) =59a(1) =55599959a(2) =99555959a(3) =5555995999a(4) =5559999559a(5) =5595959959a(6) =5595999559a(7) =5599595959a(8) =5599959559a(9) =5955559999a(10) =5955599959a(11) =5959559959a(12) =5959599559a(13) =5995559599a(14) =5995559959a(15) =5995995559a(16) =5999555959a(17) =9555599959a(18) =9555959599a(19) =9555995959a(20) =9555999559a(21) =9559595599

External references