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A280091
Pierce Expansion of tanh(1).
1
1, 4, 21, 38, 117, 7135, 7809, 1614095, 3624914, 8425892, 16789093, 18206374, 20026429, 106066483, 297533015, 329807820, 393798971, 762907505, 98220075842, 124475838767, 132042717951, 252079930415, 308550332741, 1938650338119, 10430003444835, 12126839108751
OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Pierce Expansion
Wikipedia, Engel Expansion
MATHEMATICA
PierceExp[A_, n_] := Join[Array[1 &, Floor[A]], First@Transpose@ NestList[{Floor[1/Expand[1 - #[[1]] #[[2]]]], Expand[1 - #[[1]] #[[2]]]} &, {Floor[1/(A - Floor[A])], A - Floor[A]}, n - 1]]; PierceExp[N[Tanh[1] , 7!], 50]
CROSSREFS
Cf. A073744 (tanh(1)).
Sequence in context: A204557 A161444 A188219 * A086474 A085703 A063122
KEYWORD
nonn
AUTHOR
G. C. Greubel, Dec 25 2016
STATUS
approved