A104807 - OEIS

A104807

Length of sections with distinct digits in the decimal expansion of Pi.

3, 5, 2, 4, 3, 5, 3, 2, 6, 2, 5, 4, 1, 6, 7, 2, 10, 5, 5, 4, 4, 5, 2, 4, 6, 2, 6, 5, 7, 1, 5, 2, 3, 4, 3, 7, 2, 2, 1, 7, 5, 7, 1, 3, 1, 4, 3, 4, 3, 3, 6, 3, 7, 4, 2, 5, 4, 4, 4, 7, 4, 3, 5, 4, 5, 5, 5, 4, 6, 2, 5, 6, 5, 5, 2, 2, 2, 4, 2, 4, 1, 6, 4, 2, 2, 7, 5, 7, 4, 1, 2, 2, 3, 5, 5, 7, 5, 3, 2, 1, 6, 5, 5, 3, 3

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OFFSET

1,1

COMMENTS

Start with decimal expansion of Pi: 3,1,4,1,5,9,2,6,5,3,5,8,9,7,9,3,2,3,8,4,6,2,6,4,3... Split the sequence into maximal sections with distinct digits: s={3,1,4},{1,5,9,2,6},{5,3},{5,8,9,7},{9,3,2},{3,8,4,6,2},{6,4,3},... Then a(n) = length[s(n)]: 3,5,2,4,3,5,3,... Sections with maximal length = 10 A104808.

LINKS

Table of n, a(n) for n=1..105.

CROSSREFS

Cf. A104808, A000796.

Sequence in context: A113475 A182743 A222601 * A309492 A131793 A065186

Adjacent sequences: A104804 A104805 A104806 * A104808 A104809 A104810

KEYWORD

nonn,base

AUTHOR

Zak Seidov, Mar 26 2005

STATUS

approved