cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A216159 10's-complement of A216161.

Original entry on oeis.org

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

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Author

V. Raman, Sep 02 2012

Keywords

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].
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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