a(n) contains n digits (either '7' or '8') and is divisible by 2^n.

A053379

a(n) contains n digits (either '7' or '8') and is divisible by 2^n.

Terms

    a(0) =8a(1) =88a(2) =888a(3) =7888a(4) =77888a(5) =877888a(6) =7877888a(7) =87877888a(8) =787877888a(9) =8787877888a(10) =88787877888a(11) =888787877888

External references