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A104807
Length of sections with distinct digits in the decimal expansion of Pi.
17
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
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.
CROSSREFS
Sequence in context: A113475 A182743 A222601 * A309492 A131793 A065186
KEYWORD
nonn,base
AUTHOR
Zak Seidov, Mar 26 2005
STATUS
approved