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0, 5, 130, 975, 4100, 12505, 31110, 67235, 131080, 236205, 400010, 644215, 995340, 1485185, 2151310, 3037515, 4194320, 5679445, 7558290, 9904415, 12800020, 16336425, 20614550, 25745395, 31850520, 39062525, 47525530, 57395655
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| Konrad Knopp, Theory and application of infinite series, Dover, p. 268
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LINKS
| 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
| sum(n=1, inf, 1/a(n))=ln(2)-1/2
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CROSSREFS
| Sequence in context: A012187 A012083 A012226 * A003732 A203476 A203702
Adjacent sequences: A069075 A069076 A069077 * A069079 A069080 A069081
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KEYWORD
| easy,nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 05 2002
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