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A059181 Engel expansion of ln(3) = 1.09861. 0
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 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Cf. A006784 for definition of Engel expansion

REFERENCES

F. Engel, Entwicklung der Zahlen nach Stammbruechen, Verhandlungen der 52. Versammlung deutscher Philologen und Schulmaenner in Marburg, 1913, pp. 190-191.

P. Erdos and J. O. Shallit, New bounds on the length of finite Pierce and Engel series, Sem. Theor. Nombres Bordeaux (2) 3 (1991), no.1, 43-53.

LINKS

Index entries for sequences related to Engel expansions

MATHEMATICA

EngelExp[ A_, n_ ] := Join[ Array[ 1&, Floor[ A ] ], First@Transpose@NestList[ {Ceiling[ 1/Expand[ #[ [ 1 ] ]#[ [ 2 ] ]-1 ] ], Expand[ #[ [ 1 ] ]#[ [ 2 ] ]-1 ]}&, {Ceiling[ 1/(A-Floor[ A ]) ], A-Floor[ A ]}, n-1 ] ]

CROSSREFS

Sequence in context: A041250 A041254 A041256 * A041258 A082262 A153070

Adjacent sequences:  A059178 A059179 A059180 * A059182 A059183 A059184

KEYWORD

nonn,easy,nice

AUTHOR

Mitch Harris (Harris.Mitchell(AT)mgh.harvard.edu)

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Last modified February 15 13:49 EST 2012. Contains 205810 sequences.