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A004602
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Expansion of Pi in base 3.
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30
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1, 0, 0, 1, 0, 2, 1, 1, 0, 1, 2, 2, 2, 2, 0, 1, 0, 2, 1, 1, 0, 0, 2, 1, 1, 1, 1, 1, 0, 2, 2, 1, 2, 2, 2, 2, 2, 0, 1, 1, 1, 2, 0, 1, 2, 1, 2, 1, 2, 1, 2, 0, 0, 1, 2, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 2, 2, 2, 0, 2, 2, 2, 1, 2, 0, 1, 2, 0, 1, 2, 1, 1, 1, 2, 1, 0, 1, 2, 1, 0, 1, 1, 2, 0, 0, 2, 2, 0, 1
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OFFSET
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2,6
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LINKS
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FORMULA
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a(n) = floor(Pi*3^(n-3)) - 3*floor(Pi*3^(n-4)), n>1. - G. C. Greubel, Mar 09 2018
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EXAMPLE
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10.0102110122220102110021111102212222201...
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MATHEMATICA
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RealDigits[ N[ Pi, 105], 3] [[1]]
Table[ResourceFunction["NthDigit"][Pi, n, 3], {n, 1, 100}] (* Joan Ludevid, Jun 24 2022; easy to compute a(10000000)=1 with this function; requires Mathematica 12.0+ *)
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CROSSREFS
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Pi in base b: A004601 (b=2), this sequence (b=3), A004603 (b=4), A004604 (b=5), A004605 (b=6), A004606 (b=7), A006941 (b=8), A004608 (b=9), A000796 (b=10), A068436 (b=11), A068437 (b=12), A068438 (b=13), A068439 (b=14), A068440 (b=15), A062964 (b=16), A060707 (b=60), A331313 (Pi in balanced ternary).
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KEYWORD
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AUTHOR
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STATUS
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approved
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