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Search: id:A069076
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| 27, 3375, 42875, 250047, 970299, 2924207, 7414875, 16581375, 33698267, 63521199, 112678587, 190109375, 307546875, 480048687, 726572699, 1070599167, 1540798875, 2171747375, 3004685307, 4088324799, 5479701947, 7245075375
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OFFSET
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1,1
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REFERENCES
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Konrad Knopp, Theory and application of infinite series, Dover, p. 269
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LINKS
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Konrad Knopp, Theorie und Anwendung der unendlichen Reihen, Berlin, J. Springer, 1922. (Original german edition of "Theory and Application of Infinite Series")
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FORMULA
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sum(n=1, inf, 1/a(n))=(32-3Pi^3)/64
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CROSSREFS
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Sequence in context: A104131 A132645 A017559 this_sequence A128507 A166750 A046367
Adjacent sequences: A069073 A069074 A069075 this_sequence A069077 A069078 A069079
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KEYWORD
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easy,nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 05 2002
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