A004042 Periods of reciprocals of A006883, starting with first nonzero digit.

0, 142857, 5882352941176470, 526315789473684210, 4347826086956521739130, 3448275862068965517241379310, 2127659574468085106382978723404255319148936170, 1694915254237288135593220338983050847457627118644067796610

Offset

1,2

Comments

A variant of A180340.

Links

Ray Chandler, Table of n, a(n) for n = 1..61

C. A. Van Cott, The Integer Hokey Pokey, Math Horizons, Vol. 28, pp. 24-27, November 2020.

Eric Weisstein's World of Mathematics, Full Reptend Prime

Eric Weisstein's World of Mathematics, Cyclic Number

Mathematica

f[n_]:=Block[{q}, q=Last[First[RealDigits[1/n]]]; If[IntegerQ[q], q={}]; FromDigits[q]]; q=0; lst={}; Do[If[StringLength[ToString[f[n]]]>q, AppendTo[lst, f[n]]; q=StringLength[ToString[f[n]]]], {n, 5!}]; lst (* Vladimir Joseph Stephan Orlovsky, May 21 2009 *)

Crossrefs

Cf. A180340.

Sequence in context: A344436 A146754 A180340 * A145742 A236995 A204641

Adjacent sequences: A004039 A004040 A004041 * A004043 A004044 A004045

Keyword

nonn,base

Author

N. J. A. Sloane

Extensions

Definition corrected by Max Alekseyev, Feb 12 2012

Status

approved