a(1) = 2; thereafter a(n) is the number obtained by replacing each digit of a(n-1) with its square.

A061588

a(1) = 2; thereafter a(n) is the number obtained by replacing each digit of a(n-1) with its square.

Terms

    a(0) =2a(1) =4a(2) =16a(3) =136a(4) =1936a(5) =181936a(6) =164181936

External references