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A118326
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Engel expansion of tanh(1).
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1
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2, 2, 22, 50, 70, 29091, 49606, 174594, 260086, 1395138, 8755202, 13452935, 34664211, 89502392, 490611832, 1152519711, 2034899286, 2281723269, 3511022987, 12377674446, 17495576384, 21346545848, 115293211710
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OFFSET
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1,1
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LINKS
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Simon Plouffe, Table of n, a(n) for n = 1..340
Eric Weisstein's World of Mathematics, Engel Expansion
Index entries for sequences related to Engel expansions
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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]}&, {Ceiling[1/(A-Floor[A])], A-Floor[A]}, n-1]]; EngelExp[N[Tanh[1], 7! ], 50] (* Vladimir Joseph Stephan Orlovsky, Jun 08 2009 *)
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CROSSREFS
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Sequence in context: A036110 A143807 A118454 * A212847 A087405 A001012
Adjacent sequences: A118323 A118324 A118325 * A118327 A118328 A118329
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KEYWORD
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nonn
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AUTHOR
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Eric W. Weisstein, Apr 23 2006
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STATUS
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approved
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