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A059181
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Engel expansion of log(3) = 1.09861... .
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1
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1, 11, 12, 60, 108, 139, 176, 1228, 1356, 3166, 14807, 81596, 116387, 1367315, 4408018, 11560054, 15330821, 448349063, 574897948, 613663772, 636869505, 999446566, 3786082000, 6911150147, 19780703830, 25945009665, 33227233233, 103529753474, 118556676397
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OFFSET
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1,2
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COMMENTS
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Cf. A006784 for definition of Engel expansion.
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REFERENCES
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F. Engel, Entwicklung der Zahlen nach Stammbruechen, Verhandlungen der 52. Versammlung deutscher Philologen und Schulmaenner in Marburg, 1913, pp. 190-191.
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LINKS
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F. Engel, Entwicklung der Zahlen nach Stammbruechen, Verhandlungen der 52. Versammlung deutscher Philologen und Schulmaenner in Marburg, 1913, pp. 190-191. English translation by Georg Fischer, included with his permission.
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MATHEMATICA
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EngelExp[A_, n_] := Join[Array[1 &, Floor[A]], First@Transpose@
NestList[{Ceiling[1/Expand[#[[1]] #[[2]] - 1]], Expand[#[[1]] #[[2]] - 1]/1} &, {Ceiling[1/(A - Floor[A])], (A - Floor[A])/1}, n - 1]];
EngelExp[N[Log[3], 7!], 100] (* Modified by G. C. Greubel, Dec 27 2016 *)
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CROSSREFS
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KEYWORD
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nonn,easy,nice
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AUTHOR
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STATUS
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approved
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