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A084145
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First digit occurring consecutively at least n times in Pi's decimal expansion.
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2
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3, 3, 1, 9, 9, 9, 3, 4, 7, 6, 1, 7, 8, 9, 6, 6, 6
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OFFSET
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1,1
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COMMENTS
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A simple variation on this sequence could ignore the 3 before the decimal point, making a(1)=1 instead.
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LINKS
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Eric Weisstein's World of Mathematics, Pi Digits
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EXAMPLE
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a(4)=a(5)=a(6) = 9 because there are (exactly) six consecutive 9's occurring with starting index A049522(4)=A049522(5)=A049522(6) = 763 and there are no runs of 4, 5, 6, or more consecutive equal digits having a smaller starting index.
The first occurrence of a run of at least seven consecutive equal digits occurs at starting index A049522(7) = 710101. The run consists of exactly seven 3's so a(7) = 3 [=A084144(7)] and also A049523(7) = 710101.
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CROSSREFS
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KEYWORD
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base,nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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