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.

A073342 Average digit (rounded to the nearest integer) in the decimal expansion of n-th prime.

Original entry on oeis.org

2, 3, 5, 7, 1, 2, 4, 5, 3, 6, 2, 5, 3, 4, 6, 4, 7, 4, 7, 4, 5, 8, 6, 9, 8, 1, 1, 3, 3, 2, 3, 2, 4, 4, 5, 2, 4, 3, 5, 4, 6, 3, 4, 4, 6, 6, 1, 2, 4, 4, 3, 5, 2, 3, 5, 4, 6, 3, 5, 4, 4, 5, 3, 2, 2, 4, 2, 4, 5, 5, 4, 6, 5, 4, 6, 5, 7, 6, 2, 4, 5, 2, 3, 3, 5, 4, 6, 5, 4, 4, 6, 7, 6, 5, 7, 3, 5, 3, 3, 3, 5, 6, 5, 7, 4, 6, 7, 6, 8, 2, 4, 3, 5, 5, 3, 4, 4, 6, 5, 7
Offset: 1

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Author

Y. Kelly Itakura (yitkr(AT)mta.ca), Aug 23 2002

Keywords

Examples

			For the prime 107 we have nearest((1+0+7)/3)=nearest(8/3)=3.
		

Crossrefs

Programs

  • Mathematica
    Floor[Mean[IntegerDigits[#]]+1/2]&/@Prime[Range[120]] (* Harvey P. Dale, Nov 22 2011 *)

Formula

a(n)=round(A007605(n)/A097944(n)). - R. J. Mathar, Sep 23 2008

Extensions

Changed offset to 1, added Cf. to A074462 and extended. - R. J. Mathar, Sep 23 2008