Primes consisting only of digits 1 and 4 occurring with equal frequency.

A087512

Primes consisting only of digits 1 and 4 occurring with equal frequency.

Terms

    a(0) =41a(1) =14441411a(2) =41414411a(3) =44114141a(4) =1144141441a(5) =1144144411a(6) =1144441141a(7) =1411414441a(8) =1441411441a(9) =1441444111a(10) =1444114141a(11) =4111144441a(12) =4111444411a(13) =4114414141a(14) =4141141441a(15) =4141144141a(16) =4144111441a(17) =4411114441a(18) =4411144141a(19) =4411414411a(20) =4414141141a(21) =4414441111

External references