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Search: id:A061550
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| 15, 105, 315, 693, 1287, 2145, 3315, 4845, 6783, 9177, 12075, 15525, 19575, 24273, 29667, 35805, 42735, 50505, 59163, 68757, 79335, 90945, 103635, 117453, 132447, 148665, 166155, 184965, 205143, 226737, 249795, 274365, 300495, 328233, 357627
(list; graph; listen)
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OFFSET
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0,1
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REFERENCES
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L. B. W. Jolley, "Summation of Series", Dover Publications, 1961, p. 40
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FORMULA
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1/15 + 1/105 + 1/315...= 1/12 - Gary W. Adamson (qntmpkt(AT)yahoo.com), Dec 21 2006
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CROSSREFS
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Cf. A005408.
Sequence in context: A093739 A085465 A102791 this_sequence A090454 A047640 A010931
Adjacent sequences: A061547 A061548 A061549 this_sequence A061551 A061552 A061553
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KEYWORD
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easy,nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Jun 12 2001
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EXTENSIONS
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Better description and more terms from Larry Reeves (larryr(AT)acm.org), Jun 19 2001
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