a(n) = 2^(2*5^(n-1)) mod 10^n.

A216092

a(n) = 2^(2*5^(n-1)) mod 10^n.

Terms

    a(0) =4a(1) =24a(2) =624a(3) =624a(4) =90624a(5) =890624a(6) =2890624a(7) =12890624a(8) =212890624a(9) =8212890624a(10) =18212890624a(11) =918212890624

External references