Smallest prime containing exactly n 4's.

A037061

Smallest prime containing exactly n 4's.

Terms

    a(0) =2a(1) =41a(2) =443a(3) =4441a(4) =44449a(5) =444443a(6) =24444443a(7) =424444441a(8) =444444443a(9) =4444444447a(10) =44444444441a(11) =444444444443

External references