A216159 10's-complement of A216161.

7, 7, 7, 5, 6, 4, 2, 6, 8, 2, 9, 5, 5, 8, 7, 3, 6, 5, 8, 2, 2, 8, 9, 0, 3, 1, 5, 6, 3, 8, 1, 6, 8, 5, 3, 4, 0, 8, 0, 1, 7, 7, 8, 5, 6, 4, 4, 4, 6, 6, 0, 0, 9, 0, 8, 5, 1, 8, 4, 1, 7, 3, 0, 3, 2, 3, 3, 6, 3, 0, 0, 7, 0, 7, 5, 7, 5, 0, 6, 6, 8, 7, 1, 5, 0, 3, 2, 4, 4, 8, 4, 1, 0, 3, 2, 8, 8, 7, 3, 3, 9, 0, 5, 5, 7, 0

Offset: 1

Author

V. Raman, Sep 02 2012

Keywords

• nonn

Comments

11^50 ends in 23001

11^500 ends in 2230001

11^5000 ends in 422300001

11^50000 ends in 34223000001

The last digits before the zeros tend to converge.

Crossrefs

Cf. A216161, A007185, A016090, A091663, A018248, A091664, A018247.

Formula

a(n) = 10 - [{11^(5*10^n) mod 10^(2n+2) - 1}/(10^(2n+1)) mod 10].